Help on physics questions?

Question

A student drops an egg from rest at an initial height of 2.0 m above the floor. An electronic tier indicates that the egg begins its impact with the floor 0.6385 s after release. Determine the magnitude of the acceleration of the egg during its fall, assuming it is constant.

A geologist at the top of a 100-meter-deep crevasse cannot resist the temptation to hurl a gneiss rock down to the bottom. The rock has an initial downward speed of 10.0 m/s as it leaves the geologist's hand when t=0s. Find (a) the time interval during which the particle is in flight, called the time of flight. (b) The speed of the particle at the instant just before impact. (c) Graph y vs. t. (d) Graph v vs. t.

Answer 1

1) use the formula... distance = 1/2at^2

2.0 = 1/2(a)(.6385^2)

4.9058 = 1/2(a)

a = 9.8116

2) This question requires a little more work but it is easier than it looks. Just use the kinematic equations. Good luck!