The largest acceleration that a human has ever endured occurred when a race car accidentally crashed into a wall. The car was traveling at a speed of 172.8 km/h
when it hit the wall. The car came to a complete stop 2.72 x 10-s later.

a. Calculate the acceleration of the car using the acceleration formula. Express
your answer in both m/s and in "g's." One g is equal to the free-fall
acceleration of 9.8 m/s.
b. Suppose the driver of the car had a mass of 70.0 kg. What was the
unbalanced force on his body as the car underwent negative acceleration?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

What is a carrier wave and how does it affect what you hear on the radio