Physical Science Review
29. The Difference between Velocity and Acceleration
Velocity is the speed rate that is measured in one instant, while acceleration is the measurement of speed change. For example, a truck if a truck is traveling 20 kilometers per one hour, then its velocity is 20km/hr but of the truck driver puts their foot down and the truck starts to speed up, the truck experiences acceleration.
34. Rabbit’s Average Speed
The speed is the distance/time so, since there is a given distance and a time, then
speed = 30m/2s = 30/2 m/s = 15m/s.
36. Hamster’s Acceleration
0 m/s 0 seconds
5 m/s 1 second
10 m/s 2 seconds
40. Net force ...