Question

WORK SHEET - 1

1. The direction of centripetal acceleration is [ ]

A) Away from the center B) Towards the center

C) Tangential D) perpendicular to the circular plane

2. In uniform circular motion, the physical quantity that constant is, [ ]

A) Velocity B) Acceleration C) Speed D) Displacement

3. If a particle is moving in a circular path then the motion of the particle is said to be [ ]

A) Rectilinear B) Circular C) Semi circular D) Random

4. The work done by a particle in circular motion is zero because [ ]

A) The force is always parallel to the displacement

B) The force is always perpendicular to the displacement

C) The displacement is always zero

D) The force acting on the body is always zero

5. The acceleration of an athlete at 54 kmph when negotiating a turn of radius 45m is [ ]

A) 1 m/s2 B) 3 m/s2 C) 5 m/s2 D) 7 m/s2

6. A person running in a circular track with 10 m/s speed. It is found that he is running with an acceleration of

2 m/s2

, Find the radius of that circular track. [ ]

A) 20 m B) 30 m C) 40 m D) 50 m​

Answer 1

Explanation:

1) B

2) C

3)B

4)C

I tried my best I got only these

Answer 2

I don’t answer of this question