Will mark needs to sell t-shirts as a fundraiser for a charity. she starts with 40 t-shirts and begins selling at a constant rate of 5 t-shirts each day. plot a graph representing the number of t-shirts sherry has left to sell from the time she begins selling until the t-shirts are gone.

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.