13
Select the correct locations on the table.
The table shows the changes in velocity for several different cars. Each change takes place over a 10-second interval. Which cars are either speeding
up or slowing down?
Starting Velocity
Ending Velocity
Car A
30 km/h
30 km/h
Car B
0 km/h
20 km/h
Carc
30 km/h
O km/h
D
O km/h
O km/h
Car E
20 km/h
30 km/h

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s