Physics Word Problem

Question

A monkey walks at 3m/s East for 5 seconds then instantly moves at 2m/s East for another 5 seconds. He then stops for 6 seconds. Finally he instantly moves 3m/s West for 8 seconds. His total trip time is 24 seconds. (a) Calculate total distance and displacement (b) Calculate total average speed and average velocity (c) Calculate average speed and average velocity for the 1st half of the trip

Answer 1

3m/s x 5s = 15m

 

2m/s x 5s = 10m

 

3m/s x 8s = 24m

 

distance= 15m+10m+24m=49m

 

displacement= 15m+10m-24m= 1m   ( in displacement direction is important in distance it is not)

 

speed= distance/time= 49/24=2.04m/s

 

Velocity= displacement/time=1/24= 0.041 m/s

 

1st half

 

speed= 25/12=2.08m/s=velocity