A car travelling along a highway must uniformly reduce its velocity to 15 m/s in 3.5 s. The displacement during that time is 70m. What is the car's initial velocity? m/s (answer in 2 sig figs) What is the car's average acceleration? m/s2 (answer in 2 sig figs)

If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance. what is its vertical displacement (in m) after 6 s?

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

Diamond will scratch quartz. true or false