This term in Df we will be building small cars that will be raced down a track. To make the fastest car you need to be able to decrease the friction between the car wheels and the track.
This lesson we learnt about how to calculate velocity:
Velocity: is the rate of an objects position with respect to time in a given direction.
V= displacement/time
Eg1:
A car takes 12 seconds to travel a distance of 50 metres. Determine the velocity of the car.
v=/d/t
T=12s
D=50m
V=?
v=50/12
v=4.2m/
therefore velocity is 4.2m/s
Eg2:
How long would it take a vehicle to travel 1000m if its average velocity is 15m/s
D= 1000m
V=15m/s
T ?
V=d/t
t=d/v
t=1000/15
1=66.67 sec
therefore time taken is 66.67s
Eg3:
Determine the displacement of a vehicle travelling 20m/s for duration of 1 minute.
V=20m/s
T=60s
D=?
V=d/t
txv=d
60x20=d
1200m=d
therefore the displacement is 1200m or 1.2Km
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