The weight of 4 toys is 600g . The weight of 6 such toys are

900g

Step-by-step explanation:

This is a case of direct variation as the weight will increase with the number of toys.

hence, 4/600 = 6/x

4x = 3600 (cross multiplication)

x = 900

Hence the weight of 6 such toys is 900g.

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.