1. Carl rides his bike with an average speed of 6 m/s. In 4 mins how far will Ca

Question

1. Carl rides his bike with an average speed of 6 m/s. In 4 mins how far will Carl travel in meters?

2. A tourist from England travels 100 miles from Laramie to Pine Bluffs then returns to Laramie from Ft. Collins, traveling 145 miles on the return route. The trip took 4 hours to complete, calculate the average speed of the tourist's car in miles per hour.

3. You push on a 5 kg mass that is resting on a horizontal surface with a force of 50 N. The horizontal friction force is 20 N. Calculate the acceleration in meters per second^2 of the 5 kg mass.

Explanation / Answer

1. average speed=distance/time taken

so distance=6*4*60=1440 m

2. average speed=total distance/total time=(100+145)/4=61.25 miles/hr

3. total force acting on the mass=50-20=30 N

so acceleration=force/mass=30/5=6 m/s^2

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