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30 points question..
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i) Yes
ii) Yes
iii) speed of A is 50/15 = 3.33 m/s
iv) speed of B is 100/10 = 10 m/s
v ) No
Vi) B is faster since gradient of B is steeper than A and gradient of distance-time graph represents speed.
The nature of the bodies is that they are in uniform acceleration.
From slopes of graph A is accelerating uniformly from rest (A has positive gradient) while B is decelerating to rest (B has negative gradient and stops at 0)
iv) 0 m/s and 30 m/s respectively
v) 20/15 = 1.33 m/s^2
Vi) -30/10 = -3.0 m/s^2
Vii ) Distance travelled is area under velocity-time graph = area of the triangle = 0.5 x 30 x 10 = 150m
Viii K
3. B at rest
4. A having zero acceleration
Hope this helps.
ii) Yes
iii) speed of A is 50/15 = 3.33 m/s
iv) speed of B is 100/10 = 10 m/s
v ) No
Vi) B is faster since gradient of B is steeper than A and gradient of distance-time graph represents speed.
The nature of the bodies is that they are in uniform acceleration.
From slopes of graph A is accelerating uniformly from rest (A has positive gradient) while B is decelerating to rest (B has negative gradient and stops at 0)
iv) 0 m/s and 30 m/s respectively
v) 20/15 = 1.33 m/s^2
Vi) -30/10 = -3.0 m/s^2
Vii ) Distance travelled is area under velocity-time graph = area of the triangle = 0.5 x 30 x 10 = 150m
Viii K
3. B at rest
4. A having zero acceleration
Hope this helps.
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