The picture of the position vs. time graph shows an object that is...
accelerating/speeding up
moving at a constant speed
not moving
accelerating/slowing down.
2. Multiple Choice
2 minutes
1 pt
Acceleration is defined as the CHANGE in
time it takes for one place to move to another place.
velocity of an object.
distance divided by the time interval
velocity divided by the time interval
3. Multiple Choice
2 minutes
1 pt
Why does a car accelerate as it round a corner at a constant speed?
Its direction changes
It doesn't
It slows down
Its speeds up
4. Multiple Choice
2 minutes
12 pts
Acceleration only takes place when things speed up.
True
False
5. Multiple Choice
2 minutes
1 pt
Determine the motion of the car.
at rest
moving at constant speed
speeding up
slowing down
6. Multiple Choice
2 minutes
1 pt
In each of the following cases, determine where the car has no acceleration ?
A car shortly after a stoplight turns green.
A car approaching a red light
A car with the cruise control set at 80 km/h
A car moving down a ramp
7. Multiple Choice
2 minutes
1 pt
What kind of acceleration is shown here?
positive
negative
none
varies
8. Multiple Choice
2 minutes
1 pt
Which section of the graph shows decreasing velocity?
CD
DE
EF
GH
9. Multiple Choice
3 minutes
12 pts
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
750 seconds
35 seconds
0.3 seconds
3.3 seconds
10. Multiple Choice
3 minutes
1 pt
A dog runs with an initial speed of 7.5 m/s on a waxed floor. It slides to a stop in 15 seconds. What is the acceleration?