#### Transcript Who Wants to be a Millionaire?

```Who Wants to be a
Millionaire?
Chapter 12 review
\$100
When an unbalanced force acts on an
object,
A the object’s motion does not change.
B the object accelerates.
C the weight of the object decreases.
D the inertia of the object increases.
\$200
The unit of force is the:
a.
b.
c.
d.
Joule
Kilogram
Meter
Newton
\$300
Sliding friction:
A. acts in the direction of motion.
B. equals the weight of the box.
C. is usually greater than static
friction.
D. acts in the direction opposite
of motion.
\$500
Projectile motion is caused by
A the downward force of gravity.
B an initial forward velocity.
C a final vertical velocity.
D the downward force of gravity
and an initial forward velocity.
\$1,000
What is conserved when two
objects collide in a closed
system?
a. Acceleration
b. Momentum
c. Speed
d. Velocity
\$2,000
The product of an object’s mass
and velocity is its:
a.
b.
c.
d.
Centripetal force
Momentum
Net force
Weight
\$4,000
If a force of 10N is applied to an
object with a mass of 1 kg, the
object will accelerate at:
a. 0.1 m/s2
b. 9 m/s2
c. 10 m/s2
d. 11 m/s2
\$8,000
Your weight =
a. Your mass
b. Your mass/the net force acting
on you
c. ( Your mass) (acceleration due
to gravity)
d. (Your mass) (your speed)
\$16,000
Which of the following is most
effective over long distances?
a.
b.
c.
d.
Electrical
Gravitational
Magnetic
Strong nuclear
\$32,000
The forces acting on a falling leaf
are:
a.
b.
c.
d.
Air resistance and fluid friction
Gravity and air resistance
Gravity and static friction
Weight and rolling friction
\$64,000
What is the momentum of a 50 kg
ice skater going 2m/s?
a.
b.
c.
d.
25kg/m/s
48 kgm/s
50 kg
100 kgm/s
\$125,000
What force is responsible for the
repulsion between two
positively charged particles?
a. Centripetal
b. Electric
c. Gravitational
d. Nuclear
\$250,000
The centripetal force acting on a
satellite in orbit:
a. Acts as an unbalanced force
b. Changes the direction of the
satellite
c. Is a center directed force
d. All of the above
\$500,000
What is the acceleration of a 750
kg car having a crane exerting
a force of 900N on it?
a. 670,000 kgm/s2
b. 1.2 kgm/s2
c. 0.83 m/s2
d. 1.2 m/s2
\$1,000,000
The mass of a newborn baby is
4.2 kg. What is the baby’s
weight?
a. 4.2 kg
b. 4.2 N
c. 41 N
d. 41 kg
```