Author Question: An object's angular momentum changes by 10 kg-m2/s in 2.0 s. What magnitude average torque acted on ... (Read 66 times)

iveyjurea · **on:** Jul 27, 2018

An object's angular momentum changes by 10 kg-m2/s in 2.0 s. What magnitude average torque acted on this object?

A) 2.5 N-m
B) 40 N-m
C) 10 N-m
D) 5 N-m
E) 20 N-m

Question 2

How much energy would be required to accelerate a 77. kg professor from rest to 90 the speed of light?

A) 2.3 mc2
B) 0.30 m c2
C) 1.3 m c2
D) 0.41 m c2
E) 0.50 m c2