In the preceding problem we saw that a person’s reaction time is generally not quick enough to allow the person to catch a $1 bill dropped between the fingers. The 16 cm length of the bill passes through a student’s fingers before she can grab it if she has a typical 0.25 s reaction time. How long would a billneed to be for her to have a good chance of catching it?

You are driving down the highway late one night at 20 m/s when a deer steps onto the road 40 m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 12 m/s2. How much distance is between you and the deer when you come to a stop? distance:   m What is the maximum speed you could have and still not hit the deer? maximum speed:

A demonstration of reaction time is to hold one end of a dollar bill so that it hangs lengthwise below your fingers, then ask a friend to hold his fingers near the lower corner of the bill. When you release the bill, he is to try to catch it. If a typical reaction time in this case is 0.25 s, how long would a bill need to be for a person to have a good chance of catching it?

A drag racer crosses the finish line and the driver applies the brakes to slow down. The brakes are initially applied when time was 7s and the cars speed was 12m/s. When time became t=15s, sped reduced to 5m/s. What was the car acceleration?

A ball is thrown into a wall at a speed of 20 m/s and bounces off going 10 m/s in the opposite direction 0.2s after hitting the wall. What is the acceleration of the ball?

You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at an average speed of 139m/s. How much time does it take for the impulse, which travels at a distance of 1.81m, to reach your brain?

A pig on roller skates is moving with an initial velocity of -10 m/s and is accelerating at a rate of 2m/s/s, therefore the pig is __________during the next 2 seconds.

Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.400 s and reaches the level of the top of the pole after a total elapsed time of 4.00 s. What was the speed of the ball at launch?

A cockroach is running across the floor at a velocity of 1.5 cm/s trying to find some Takis (that a physics student spilled).  All of a sudden it sees a student coming to step on it so it stops.  This all occurred in 0.5 seconds.  What was the cockroach’s rate of acceleration?

To settle an argument Dr Goulding and his Mrs (his wife) decide to have a 40.0 m lang snowshoe race, with the prize being a very nice locally made face mask. At the start line they shake hands and when their cat helper Charlie fires the start gun they begin running on thier snowshoes. Dr Gaulding reaches his maximum speed of speed of 2.68 m/s in a time of 10.0 s while The Mrs accelerates to her maximum speed of 3.00 m/s at a rate of a,-0.20 m/s2 How far are they apart when the runners have both reached their maximum running speeds? Your Answer: Answer units