Posterous theme by Cory Watilo

Plenary worksheet

Plenary worksheet

Tuesday, July 06, 2010

3:04 PM

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Question 1

a)      12 seconds

b)      d=100m, t=12s, v=d/t, v=100/12, v=8.3m/s

c)      A- the runner is accelerating, B – the runner is at a constant speed, C – The runner is decelerating, D – The runner has topped.

d)     The speed is greatest in A, because the runner is accelerating the most.

e)      124m

Question 2

a)      1.5m/s

b)      1s

c)      v=1.5m/s, t=1s, a=v/∆t, a=1.5/1, a= 1.5m/s2

d)     d=1/2bxh, d=0.5x1.5, d=0.75m

e)      d=1/2bxh, d=1x1.5, d=1.5m

Question 3

a)     

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b)      35s

c)      10m/s

d)     v=15m, t=15s, a=∆v/∆t, a=15/15, a= 1m/s2

e)      v=20m/s, t=20s, d=s x t, d=20x20, d=400m