What is the initial velocity of the ball thrown vertically upwards?

A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate (1) The maximum height to which it rises. (2) The total time it takes to return to the surface of the earth. Initial velocity of the ball (u) = 49m/s.

What is the velocity of a stone thrown from a tower?

Originally Answered: A stone thrown upward with a speed u from the top of a tower reaches the ground with a velocity 3u. What is the height of the tower? Let the height of the tower be h.

How far will the ball travel if it is thrown upwards?

Now, we need to find, what’s s and t. Note: Since the ball is thrown upwards, which is against the force of gravity (gravity always acts downwards), we need take the value of a (in this case, g) as . Hence, the ball will travel for 2 seconds and complete a distance of 20 metres upwards.

How fast does the ball reach its maximum height after 2s?

That means velocity will decrease by 10 m/s every second. Hence, if the ball was thrown with 20 m/s, after 1 s its velocity would be reduced to 10 m/s and after 2 s it would come to rest. Hence, it will reach its maximum height after 2 s.

A ball is thrown vertically upwards from the ground with an initial velocity of 15m/s. How long does it take the ball to reach its maximum altitude? Q: A ball is thrown vertically upwards from the ground with an initial velocity of 15m/s.

What happens to the vertical velocity as an object rises?

(c) The velocity in the vertical direction begins to decrease as the object rises; at its highest point, the vertical velocity is zero. As the object falls towards the Earth again, the vertical velocity increases again in magnitude but points in the opposite direction to the initial vertical velocity.

Why is the initial velocity of an object in space positive?

Note that because up is positive, the initial velocity is positive, as is the maximum height, but the acceleration due to gravity is negative.

What is the maximum height a projectile can reach?

Note also that the maximum height depends only on the vertical component of the initial velocity, so that any projectile with a 67.6 m/s initial vertical component of velocity will reach a maximum height of 233 m (neglecting air resistance).

What is the initial velocity of a body of 2 kg?

A body of mass 2 kg is thrown vertically upwards with an initial velocity of 20 m/s. What m: potential energy at the end of 2 s? g = 10 m / s ^ 2 ) A body of mass 2 kg is thrown vertically upwards with an initial velocity of 20 m/s. What m: potential energy at the end of 2 s? g = 10m/s2)

What is the final velocity at the greatest height h?

At the greatest height h, a body thrown vertically upward with velocity u will have a final velocity (v) zero. Was this answer helpful? Thank you. Your Feedback will Help us Serve you better.

What is the maximum height to which the ball will rise?

(1) The maximum height to which the ball rises = 122.5 m (2) The total time ball takes to return to the surface of the earth = 5 + 5 = 10 sec. Was this answer helpful?

What is the speed of a ball at half the height?

A ball is projected vertically upwards. Its speed at half of maximum height is 20 m/s. The maximum height attained by it is [Take g = 10 m/s2]

What is the total time ball takes to return to Earth?

(2) The total time ball takes to return to the surface of the earth = 5 + 5 = 10 sec. Was this answer helpful? Thank you. Your Feedback will Help us Serve you better.

What is the velocity of the body after 5 seconds?

So, the answer to the third and final question is: The velocity of the body after 5 s is -10 m/s. If what you really want is the speed of the body, not its velocity, than you can take +10 m/s as your answer instead. It loses velocity at the rate of 10m/s per second — so it ascends for 4 seconds, and total time is 8 seconds.

How do you calculate the initial velocity of a stone thrown up?

S0 is the displacement of the body projected upwards and S1 as the displacement of the body dropped when they both meet. S = S0 + S1 = 500m. And then s1 + s2 = 500 and solving it from there. A stone is thrown up with an initial velocity of 40m/s.

When a body dropped from a height explodes in mid-air?

When a body dropped from a height explodes in mid-air,its center of mass keeps moving in vertically downward direction. Explosion occur under internal forces only. External is zero. A stone is dropped freely from the top of a tower and it reaches the ground in 4 sec taking (g = 1 0 m s 2 ).

How does the ball return to the thrower in 8 seconds?

The ball returns to the thrower in 8 seconds. In these 8 seconds ball goes up against gravity and keeping going up till its velocity reduces to zero at the highest point. Thereafter the ball begins to drop towards the earth under gravity and reaches the point from which it was thrown up.

How long does it take for a ball to reach maximum height?

Look for spinal muscular atrophy symptoms. As mentioned, ball takes 4 seconds to come back to the same position. Therefore from this we can say it take 2 second to rise to maximum height and in next 2 second it falls from maximum height to the position where it is thrown (this is because time of accent = time of decent).

What is the maximum height of the ball after 4 s?

The maximum height reached by the ball (c). After 3 second, it starts to fall down. Hence after 4 s, the ball is at a height of 40 m above the ground. Was this answer helpful?

When a ball is thrown upward the equations of fall apply?

If a ball is thrown upward, the equations of free fall apply equally to its ascent as well as its descent.

What is the speed at which an object is thrown?

An object is thrown downward with an initial (t = 0) speed of 10 m/s from a height of 60 m above the ground. At the same instant (t = 0), a second object is propelled vertically upward from ground level with a speed of 40 m/s.

What is the acceleration of the ball at peak height?

Because air resistance depends on speed, at peak height, the speed is zero and so is air resistance. So, peak height is really the only time in this ball’s lifetime that there is truly an acceleration of -9.8, without air resistance at all. A man throws a ball of mass 0.5 kg vertically upward, with a speed of 10 m per second.

What is the speed of the ball at the highest point?

Speed of the ball at the highest point is zero m/s. The max height you need to calculate. HOWEVER, as you know the acceleration due to gravity is roughly 10 m/s/s and in one second its average speed from zero to 10 has to be 5 m/s.

How do you find the initial velocity of a falling object?

Decide whether the object has an initial velocity. We will assume v₀ = 0. Choose how long the object is falling. In this example, we will use the time of 8 seconds. Calculate the final free fall speed (just before hitting the ground) with the formula v = v₀ + gt = 0 + 9.80665 * 8 = 78.45 m/s.

How long does it take a ball to reach the ground?

So the ball needs 2.43 sec to reach the ground from max position upwards. A stone is thrown vertically from the top of a tower with velocity of 5m/s. It reaches the ground after 8 seconds. What is the height of the tower?

What is the average velocity of gravity at maximum velocity?

Assuming the acceleration of gravity is constant (at -10 m/s/s), the change in velocity is linear, and it is much simpler to use the average velocity: Final velocity is zero (at maximum altitude). Therefore, the average velocity is 7.5 m/s.

Why does an object thrown upwards come down after reaching a point?

Why an object thrown upwards comes down after reaching a point? When an object is thrown with certain initial velocity (say V), it gains a Kinetic energy at that moment of throwing. As it moves upwards from its initial position (wherefrom it’s thrown) and gains height, its potential energy rises.

Why is the acceleration of the ball negative in the graph?

The acceleration is negative because this acceleration is directing downwards while the ball is moving upward. And because of this negative acceleration, the velocity of the ball is gradually decreasing.

What is the final velocity of a human body at altitude?

Final velocity is zero (at maximum altitude). Therefore, the average velocity is 7.5 m/s. Since gravity steals 10 m/s from upward velocity every second, it will take 1.5 seconds for the initial 15 m/s to be reduced to zero.

What height does the kinetic energy of a ball become half?

A ball is vertically upwards with a velocity of 20m/s. At what height does its kinetic energy become half? If KE become half then PE = (mgh)/2. The height will be 10 (10/49) m or 10.20408 m ≈ 10.2 m A ball is vertically upwards with a velocity of 20m/s. At what height does its kinetic energy become half? If KE become half then PE = (mgh)/2.

What is the speed at which a 250g ball is thrown?

Originally Answered: A ball with a mass of 250g is thrown straight upwards with a speed of 20m/s. It is caught on its way down at a point 5m above the original point it was thrown. How fast was it going when it was caught?