A ball rolls down a hill from rest to a final speed of 20.0 m/s in 10.0 seconds. If the ball has a mass of 4.5 kg, what is the net force acting on it?
A. 2.0 N
B. 9.0 N C. 200 N D. -45 N
ОА
OB
Ос
OD

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.