Unit 1 Exam Review - SPS 8

How do you solve for velocity?

• distance  $\div$  time

• time  $\div$  distance

• mass  $\times$  acceleration

• force  $\times$  distance

What is the acceleration of car that starts from rest and takes 20 seconds to get to a speed of 50 m/s?

• 0.4 m/s²

• 30 m/s²

• 2.5 m/s²

• 4 m/s

Four cars took part in a race. Based on the graph which car had the fastest speed?

• A

• B

• C

• D

Which part of this graph shows that the object is slowing down?

• A

• B

• C

• D

Which animal would have the greatest inertia?

• Lion

• Otter

• Dog

• Beaver

According to Newton's 2nd law if you use the same force to push a truck and push a car, Which would have more acceleration and why?

• The car will have more acceleration than the truck, because the car has more mass.

• The car will have more acceleration than the truck, because the car has less mass.

• The truck will have more acceleration than the car, because the car has less mass.

• They will both have equal accelerations.

Using Newton's 3rd law what is happening in the picture?

• An object at rest stays at rest.

• An object in motion stays in motion.

• For every action there's an equal and opposite reaction.

• Force is equal to mass times acceleration

What two things directly affect the force of gravity?

• mass and acceleration

• distance and mass

• force and mass

• distance and time

What's the difference between mass and weight?

• mass stays the same, weight changes with gravity.

• mass increases with gravity, weight stays the same.

• mass decreases with gravity, weight stays the same.

• mass stays the same, weight stays the same.

Which pulley has the greatest mechanical advantage?

• 1

• 2

• 3

• 4