Answer to Question #296367 in Physics for kazi

Question

1.) Find the angular velocity of an object in non-circular motion with 2-m radius circular path. Its tangential speed is 10 m/s.

a. 5 radians per second

b. 50 radians per second

c. 20 radians per second

d. 10 radians per second

2.) In non-uniform circular motion, the direction of the centripetal acceleration is _____ inwards.

a. sometimes

b. oftentimes

c. always

d. never

3.) In uniform circular motion, angular velocity is

a. varying

b. constant, nonzero

c. increasing

4.) A satellite is placed in a circular orbit to observe the surface of Mars from an altitude of 144 km. The equatorial radius of Mars is 3397 km. If the speed of the satellite is 3480 m/s, what is the magnitude of the centripetal acceleration in m/s²of the satellite?

a. 3.42

b. 2.17

c. 2.99

d. 4.05

Answer 1

1. Answer: a. 5 radians per second

2. Answer: c. always

3. Answer: b. constant, nonzero

4. Answer: a. 3.42