Question 1

The standard unit of force is the

Accepted Answer

newton

Answer

liter

Answer

m/sec$^2$

Answer

kilogram

Question 2

Newton's First Law of Motion is sometimes called

Accepted Answer

Law of Inertia

Answer

Force Law

Answer

Law of Acceleration

Answer

Law of Uniform Motion

Question 3

According to Newton's First Law of Motion, an object will remain at rest

Accepted Answer

Until an unbalanced force acts on it

Answer

For eternity

Answer

If the net force on it is negative

Answer

If the net force on it is positive

Question 4

According to Newton's Second Law of Motion, an object accelerates

Accepted Answer

In the same direction as the applied force

Answer

Sometimes in the same direction, sometimes in the opposite direction

Answer

When no force is applied

Answer

In the opposite direction as the applied force

Question 5

If a force causing an object to accelerate is multiplied by two times, then the acceleration is multiplied by

Accepted Answer

two times

Answer

one half

Answer

one quarter

Answer

four times

Question 6

If the net forces acting on an object add up to zero

Accepted Answer

The object's motion will not change

Answer

The object's direction can change, but not its speed

Answer

The object's speed will increase

Answer

The object must be at rest

Question 7

A 1500 kg car has an initial speed of 10.0 m/sec. It travels in a straight line and its speed increases to 25.0 m/sec in a distance of 50.0 m. Assuming its acceleration is constant, determine the average force acting on the car.

Accepted Answer

7.88 X$^3$N

Answer

1.58 X 10$^4$ N

Answer

450. N

Answer

1.88 X 10$^4$ N

Question 8

A 15.0 kg mass rests on a horizontal frictionless surface. A 2.00 kg ball is attached to the other mass by a massless string and passes over a frictionless pulley. When the 2.00 kg mass is released to fall, the acceleration of the system is

Accepted Answer

1.15 m/sec$^2$

Answer

1.31 m/sec$^2$

Answer

0.867 m/sec$^2$

Answer

9.80 m/sec$^2$

Question 9

A 22.0 kg mass is hanging from a string. If the mass accelerates  at - 4.00 m/sec$^2$, what is the tension in the string?

Accepted Answer

128 N

Answer

9.80 N

Answer

88.0 N

Answer

304 N

Question 10

A 100. kg climber is uniformly decelerated to rest over a distance of 20.0 m by a rope which has a tension of 300. N.  The speed of the climber at the beginning of the 20.0 m fall is most nearly

Accepted Answer

16.5 m/sec

Answer

9.80 m/sec

Answer

11.0 m/sec

Answer

6.80 m/sec

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