Subject :NSO Class : Class 6
A solid ball is released from the top of a slope as shown in the figure.
What will happen to the ball's kinetic and potential energy as it slips down the slope at a constant speed?
| Kinetic energy |
Potential energy |
|
|---|---|---|
| A | Increases | Decreases |
| B | Remains unchanged |
Decreases |
| C | Increases | Increases |
| D | Remains unchanged |
Remains unchanged |
Ans 1:
Class : Class 4
option a
Ans 2:
Class : Class 6
actually, its given constant speed so b is correct as kinetic energy increases only when the speed increase
Ans 3:
Class : Class 7
Option A is correct option. At the top GPE will be maximum and at the bottom of ramp GPE will be zero.At the top, KE will be zero and at the bottom KE will be maximum.Solution given is incorrect. Acceleration is constant not the speed of ball.
Ans 4:
Class : Class 6
kinectic energy increases and potential energy decreases