Physics, 11.12.2021 19:20 Naviascales7018

Ben is cycling at 5 mph on a flat road and starts to accelerate to 20 mph. Force A has changed from 14 N to 37 N by the time he reaches 15 mph.
Force B changes from 27 N to 76 N when he starts to accelerate and stays at that value. Force C changes from 13 N to 17 N by the time he reaches 15 mph.

а Suggest which force is the force from the pedals. Explain your answer.

b Work out the resultant horizontal force on the bike at 15 mph and state its direction. Ben continues to pedal with the same force, but his speed stops changing when he reaches 20 mph.

с What is the resultant horizontal force on the bike at 20 mph? Explain your answer.

d How big is the combined force of friction and air resistance at 20 mph? Explain your answer.

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 21:20

Abearing is designed to a reduce friction b. support a load c.guide moving parts such as wheels, shafts and pivots d. all of the above

Answers: 3

Answer

Physics, 22.06.2019 17:30

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in

Answers: 3

Answer

Physics, 22.06.2019 20:00

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?

Answers: 1

Answer

Physics, 22.06.2019 21:30

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.

Answers: 1

Answer

You know the right answer?

Ben is cycling at 5 mph on a flat road and starts to accelerate to 20 mph. Force A has changed fro...

Questions