In a car insurance policy, collision insurance covers a. all your medical expenses in case of an accident. b. claims against you if you injure someone in an accident. c. the cost of your car if it's stolen. d. damages over the amount of your deductible.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

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