The unbalanced force required to accelerate a 2.0 kg mass at 4.0 m/s^2 is

6.0 N

2.0 N

8.0 N

16 N

A force of 10. N applied to a given mass accelerates it at 1.0 m/s^2. The same force applied to a mass one-half as great would produce an acceleration of

1.0 m/s^2

2.0 m/s^2

0.50 m/s^2

4.0 m/s^2

A certain net force causes a 10. kg mass to accelerate at 20. m/s^2. The same force will cause a 5.0 kg mass to accelerate at

9.8 m/s^2

10. m/s^2

25 m/s^2

40. m/s^2

A 30. kg child exerts a force of 100. N on a 50. kg object. The force the object exerts on the child is

0.0 N

100. N

980 N

1500 N

If the mass of an object is decreased, its inertia

decreases

increases

remains the same

If the net force applied in the direction of motion to a certain object on a horizontal frictionless surface is doubled, the acceleration of the object is

halved

doubled

unchanged

quadrupled

A car whose mass is 2000 kg is accelerated uniformly from rest to a speed of 15 m/s in 10. s on a level highway. The net force accelerating the car is

2000 N

3000 N

20,000 N

30,000 N

If the sum of all the forces acting on a car is zero, the car must be

must be at rest

may be at rest

must be accelerating

must be moving at a constant speed

Which of the following is equal to one Newton?

kg•m/s

kg•m

kg•m/s^2

kg/m•s^2

If the magnitude of the gravitational force of Earth on the Moon is F, the magnitude of the gravitational force of the Moon on Earth is