Equations
of Motion Questions
v = u + at
s = ½(u + v)t
s = ut + ½at2
v2 = u2 + 2as
1.)
A car moving from rest accelerates at a rate of 2m/s2 for a
time of 5 seconds. What is its velocity at the end of this time period?
2)
A vehicle approaches a set of traffic lights with a speed of 15m/s. When
50m from the lights the driver brakes and comes to a rest at the lights.
Calculate the deceleration of the vehicle.
3)
A car moving with a speed of 10m/s begins to accelerate at a rate of
1.5m/s2 for a time of 10s. How far did it travel over this time
interval?
4)
During a 100m race sprinter accelerates away from the blocks at a rate
of 2m/s2 for 5 seconds. She then continues with constant speed for
the remainder of the race.
a)
What was her speed after the first 5s?
b)
What distance did she cover during the first 5s?
c)
What was her overall time for the race?
d)
Sketch on your answer paper
her speed time graph.
5)
A car moving with a speed of 10m/s accelerates and over the next 50m
reaches a speed of 20m/s. Calculate the acceleration of the car.
6)
Starting from rest a car accelerates at a rate of 2.5m/s2 and
covers a distance of 80m. How long did this take?
7)
A speed cyclist slows from a velocity of 21m/s at a deceleration of
3.5m/s2.
a)
How long does he take to come to rest?
b)
How far does he travel in coming to rest?
