Exercise 1

A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's". Calculate the magnitude of the force on a 88-kg person accelerating at this rate.(answer in two significant figures and units)

Exercise 2

How much tension must a cable withstand if it is used to accelerate a 1100-kg car vertically upward at 0.80m/s^2?(answer in two significant figures and units)

Exercise 3

A train locomotive is pulling two cars of the same mass behind it as shown

\fN 41.50 (835 km/h)You are driving home from school steadily at 99 km/h for 170 km.It then begins to rain and you slow to 62 km/h instantly. You arrive home after driving 5.0 hours\f\fA car moving in a straight line starts at a = ( at t = 0. It passes the point + = 25 0 m with a speed of 11.5 m/satt = 3.00 s . It passes the point . = 385 m with a speed of 44.0 m/s at t = 20 0 sA rolling ball moves from c) = 8.1 cm to 12 = -4.0 cm during the time from t, = 3.3 s tot, = 6./ s\f\f