1.

The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s²)t². What is the average velocity of the particle between t = 0.30 s and t = 0.40 s? 1.

2.

An auto accelerates forward from 7.0 m/s at a uniform 0.71 m/s². It travels a distance of 1.033 km while accelerating. (a) How fast is the auto moving just as it is traveled the 1.033 km? (b) How many seconds did it take to travel the 1.033 km?

3.

The graph in the gure represents the velocity of a particle as it travels along the xaxis. What is the average acceleration of the particle between t = 2.0 s and t = 4.0 3? V1 ((1115) I 5 3.0 4.0 l ) . As shown in the gure, a heavy rock is shot upward from the edge of a vertical cliff. It leaves the edge of the cliff with an initial velocity of 15 m/s directed at 25 from the vertical and experiences no appreciable air resistance as it travels. How high is the cliff? . 34.0 m . 1~