Fall semester Review

In the diagram above, what does the slope of each line on the graph represent?

• total distance traveled by each variable

• the direction of each variable

• total time traveled by each variable

• the speed of each variable

In the velocity vs. time graph, shown above, the object at line C:

• has zero acceleration

• is moving at a constant speed

• has positive acceleration

• has negative acceleration

A race car accelerates from 0 m/s to 40.0 m/s in 4 seconds. What is the vehicle's acceleration?

• 16.0 m/s²

• 4.00 m/s²

• 10.0 m/s²

• 8.00 m/s²

Driving home from work, a black cat crosses your path. You slam on your brakes and come to a stop in 0.4 seconds. If your car had an acceleration of -50.0 m/s², what velocity were you orginally driving?

• 35 m/s

• 65 m/s

• 20 m/s

• 45 m/s

Determine the acceleration of the object as portrayed by the graph below:

• 30 m/s²

• -3 m/s²

• 3 m/s²

• -70.8 m/s²

A rock was thrown down at -12 m/s. After falling for 6 seconds, it will have a velocity of about

• about 20 m/s

• about 5 m/s

• 0 m/s

• about 10 m/s

A ball is thrown straight up. What is the instantaneous speed at the top of the ball's path?

• about 0 m/s

• about 20 m/s

• about 5 m/s

• about 10 m/s

For the winter, a duck flies 12.0 m/s north against the wind with a velocity of 2.5 m/s south. What is the resultant velocity for the duck?

• 9.5 m/s north

• 9.5 m/s south

• 14.5 m/s north

• 14.5 m/s south

In the diagram, an object is thrown horizontally off a cliff with an initial velocity of 5.0 meters per second East. The object strikes the ground 3.0 seconds later. how far from the base of the cliff will the object strike the ground?

• 2.9 m

• 15 m

• 44 m

• 9.9 m

In the diagram, an object is thrown horizontally off a cliff with an initial velocity of 5.0 meters per second East. The object strikes the ground 3.0 seconds later.

what is the vertical speed of the object as it reaches the ground?

• 130 m/s

• 29 m/s

• 15 m/s

• 5.0 m/s