If the velocity of an object is given by V= 8*t^2+2-5*t^2+4, when x0=9, what is its displacement after 1 second?

If the velocity of an object is given by V = 9* t4+2 - 1*t4 +7, when x0 = 4, what is its displacement after 6 seconds?

Nerve impulses in a human body travel at a speed of about 100 m/s. Suppose a person accidentally steps barefoot on a pebble. About how much time does it take the nerve impulse to travel from the foot to the brain (in s)? Assume the person is 1.60 m tall and the nerve impulse travels at uniform speed.

A cart is given an initial velocity of 5 m/s and experiences a constant acceleration of 2.4 m/s?. What is the magnitude of the cart's displacement during the first 11s of its motion?

A rock is dropped from a 154-m-high cliff. How long does it take to fall (a) the first 77.0 m and (b) the second 77.0 m?

The speed of propagation of the action potential (an electric signal) in a nerve cell depends (inversely) on the diameter of the axon(nerve fiber). If the nerve cell connecting the spinal cord to your feet is 0.9 m long and the nerve impulse is 16 m/s. How long (in s) does it take for the nerve signal to travel this distance ?

An Australian magpie (Gymnorhina tibicen) flies 53 m south and then 47 m west, in a total time of 35 minutes. What is its displacement from the starting position? Enter only the numerical part of your answer (in m) to the nearest integer.

(a) Calculate the height (in m) of a cliff if it takes 2.30 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.07 m/s. (Enter a number.) m (b) How long (in s) would it take to reach the ground if it is thrown straight down with the same speed? (Enter a number.) s †

If the velocity of an object is given by V = 5* t3+2 - 6*t3 +6, when x0 = 5, what is its displacement after 3 seconds?

The height (feet) of an object moving vertically is given by s = - 16t + 208t + 156, where t is in seconds. Find the object's velocity at t= 5, its maximum height and when it occurs, and its velocity when s = 0.