CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Energy and It's Sources

Two boys A an...

Question

Two boys A and B are standing at two positions as shown in the diagram. Each step is 20 cm high and 20 cm wide. The potential energy is assumed to be zero at the ground. Consider $g = 10 m / s^{2}$ and assume that there is no loss of energy.

What is the kinetic energy of the ball at the point of release?

A

10.5 J

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

8 J

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

0 J

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

10 J

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 0 J
The velocity of the object is zero when it is dropped.
Since the velocity of the ball is zero, the kinetic energy will be zero.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Two boys A and B are standing at two positions as shown in the diagram. Each step is 20 cm high and 20 cm wide. The potential energy is assumed to be zero at the ground. Consider

g = 10 m / s^{2}

and assume that there is no loss of energy.

What is the kinetic energy of the ball at the point of release?

Q. Two boys A and B are standing at two positions as shown in the diagram. Each step is 20 cm high and 20 cm wide. The mass of the ball is 300 grams, The potential energy is assumed to be zero at the ground. Consider

g = 10 m / s^{2}

and assume that there is no loss of energy.

What is the potential energy (in Joules) of the ball at the point of release?

Q. Two boys A and B are standing at two positions as shown in the diagram. Each step is 20 cm high and 20 cm wide. The potential energy is assumed to be zero at the ground. Consider g = 10

m / s^{2}

and assume that there is no loss of energy.

Choose the correct statement for the situation where both boys move towards each other.

[1 mark]

Q. Two boys A and B are standing at two positions as shown in the diagram. Each step is 20 cm high and 20 cm wide. The potential energy is assumed to be zero at the ground. Consider

g = 10 m / s^{2}

and assume that there is no loss of energy.

If B releases a ball of mass 500 grams from the height as shown in the diagram, what will be the velocity of the ball when it reaches the level of the third step from the ground?

[1 mark]

A

B

are standing at two positions on a staircase.

B

500 g

ball in his hand which is

50 cm

higher than the platform he is on. Each step is

20 cm

20 cm

B

drops the ball from his hand down the stairs and

A

stops the ball on the second step. Find the change in potential energy of the ball.

g

= 10 {m s}^{- 2}

and assume that there is no loss of energy when the ball rolls down the staircase.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Why Conservation of Energy?

PHYSICS

Watch in App

explore_more_icon

Explore more

Energy and It's Sources

Standard IX Physics

Join BYJU'S Learning Program

CrossIcon