Every few years, different countries compete in a sailboat race called the America's Cup. The boats sail over the same distance. Besides distance, what else is needed to find out the speed of each boat in the race?
Options-
A. The wind speed during the race.
B. The time it takes for each boat to finish the race.
C. The skill of the crew of each boat in the race.
D. The combined size of the boats in the race.
B. The time it takes for each boat to finish the race.
A picture shows a ball rolling up a ramp starting at the bottom 1 sec, 2 sec, 3 sec and 4 sec finishing at the top of the ramp.
Which statement best describes the motion of the ball?
Options
A. The speed of the ball is increasing.
B. The speed of the ball is decreasing.
C. The motion of the ball is constant.
D. The motion of the ball is stopping.
Which statement is an example of velocity?
Options
A. A skateboard moves 2 meters per second.
B. A car travels east at 55 kilometers per hour.
C. A student walks 20 meters down the street.
D. A ball rolls 50 centimeters away from the table.
B. A car travels east at 55 kilometers per hour.
Which characteristic is constant for the car as it travels around the roundabout picture shown. The car is moving around the roundabout at 10m/s
Options:
A. speed
B. position
C. velocity
D. direction
D. direction
On a position-time graph, which of the following does the value of the slope indicate about the object?
A. change in direction
B. velocity
C. total distance
D. change in position
B. velocity
Which situation is an example of negative acceleration?
Options
A. a bicycle increasing its velocity as the rider pedals harder
B. a jogger slowing down at the end of a race
C. a car moving at a constant velocity
D. a diver jumping off a diving board and falling to the swimming pool below