1. The unbalanced force required to accelerate a 2.0 kg mass at 4.0 m/s2
is
6.0
N 2.0 N 8.0 N
16 N
2. A force of 10. N applied to a given mass accelerates it at 1.0 m/s2.
The same force applied to a mass one-half
as great would produce an acceleration of
1.0
m/s2 2.0 m/s2 0.50 m/s2
4.0 m/s2
3. A certain net force causes a 10. kg mass to accelerate at 20. m/s2.
The same force will cause a 5.0 kg mass to
accelerate at
9.8
m/s2 10. m/s2 25 m/s2
40.
m/s2
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
0.0
N 100 N 980 N
1500 N
5. If the mass of an object is decreased, its inertia
decreases
increases 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
halved
doubled
unchanged 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
2000
N 3000 N 20,000 N
30,000 N
8. If the sum of all the forces acting on a car is zero, the car
must
be at rest may be at rest must be moving at a
constant speed must be accelerating
9. Which of the following is equal to one Newton ?
kg•m/s
kg•m kg•m/s2
kg/m•s2
10. The weight of an apple is closest to
1 N
9.8 N 19.6 N
980 N
Base your answers to questions 11 through 13 on the diagram below which shows a wooden block on a frictionless surface with two opposing forces acting on it.
11. The weight of the wooden block is
1 N
9.8
N 2.2 N 19.6 N
12. The wooden block must be
at
rest moving to the right at a constant velocity
accelerating to the left
accelerating
to the right
13. If F1 equals 2 N and F2 equals 5 N, then
the net force acting on the block is
2N
to the left 3N to the left 2N to the right
3N
to the right
14. On the surface of a distant planet a 5 kg mass weighs 20 N. What
is the acceleration due to gravity there ?
0.25
m/s2 1m/s2 4 m/s2
15 m/s2