Newton's Laws
Review
1. The unbalanced force required to accelerate a 2.0 kg mass at 4.0 m/s^2 is
a)
6.0 N b) 2.0 N c) 8.0 N d) 16 N
2. 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
a) 1.0 m/s^2 b) 2.0 m/s^2 c) 0.50 m/s^2 d) 4.0 m/s^2
3. 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
a) 9.8 m/s^2 b) 10. m/s^2 c) 25 m/s^2 d) 40. m/s^2
4. A 30 kg child exerts a force of 100 N on a 50 kg object. The force the object
exerts on the child is
a)
0.0 N b) 100 N c) 980 N d) 1500 N
5. If the mass of an object is decreased, its inertia
a)
decreases b) increases c) remains the same
6. 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
a)
halved b) doubled c) unchanged d) quadrupled
7. 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
a)
2000 N b) 3000 N c) 20,000 N d) 30,000 N
8. If the sum of all the forces acting on a car is zero, the car must be
a) at rest b) may be at rest b) must be moving at a constant speed
c) must be accelerating
9. Which of the following is equal to one Newton ?
a)
kg•m/s b) kg•m c) kg•m/s^2 d) kg/m•s^2
10. 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
a) smaller than F b) larger than F
c) equal
to F