CAIE IGCSE Physics 1.2.9 Acceleration as change in velocity per

Practise defining acceleration and using change in velocity over time to find a, v or t in motion contexts.

Exam points

state acceleration as change in velocity per unit time or rate of change of velocity
use a = Δv / Δt to calculate acceleration, final speed or time from given data

[Maximum number: 2]

Fig. 2.1 shows a motorcyclist accelerating along a straight horizontal section of track.

Fig. 2.1

The motorcyclist and motorcycle have a combined mass of 240 kg .

On the straight horizontal section of the track, the motorcyclist accelerates from rest at $7.2 \mathrm{~m} / \mathrm{s}^{2}$ .

The motorcyclist reaches the end of the straight section of track in 5.3 s .

Calculate the speed of the motorcyclist at the end of the straight section.
speed =

(speed $=) 38 \mathrm{~m} / \mathrm{s}$

A2

$a=\Delta v / \Delta t \mathbf{O R}(\Delta v=) a \Delta t \mathbf{O R}(\Delta v=) 7.2 \times 5.3$

C1

All question bank results loaded

1.2.9—Acceleration as change in velocity per question 1