Summary Nova 3hv Physics

A snapshot of the summary - Nova 3hv Physics Author: F Alkemade, L Lenders, F Molin, R Tromp ISBN: 9789034587831

• 5 Forces and motion

• 5.1 Accelerating

• What is a (speed, time) diagram?

  A graph that shows you quickly how an entire motion progressed.
• What is a uniform acceleration?

  A motion in which the speed keeps increasing at a steady rate

• 5.1.2 Making a (v, t) diagram

• What is gradually speeding up called

  Accelerating

• 5.1.4 Calculating the acceleration

• What is the fromula for calculating the acceleration

  A=▲v/▲t
• How do you convert m/s into km/h

  m/s x 3.6
  km/h : 3.6

• 5.1.5 Determining the distance coverd

• How do you calculate the distance coverd

  By finding the area under the line in the (v, t) diagram

• 5.2 Force, mass and acceleration

• What are the two main forces acting upon you and your bike to slow down the motion?

  Air friction and rolling friction.
• why does air friction occur?

  Because when cycling, you have to keep pushing the air in front of you aside. The faster you go, the more air resistance.
• Which four forces are acting on a car?

  Gravity, normal force, pushing force and friction.
• Why does rolling fricton occur?

  Because the tyres and the road surface are being made to change shape as you go along. The greater this deformation, the more rolling friction.