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