(a) Can two cars have the same speed but different velocities? Explain. (b) Can twocars have the same velocity but different speeds? Explain.

10) A jaguar was observed to have left skid marks that were 300 m in length. Assuming that the jaguar skidded to a stop with a constant acceleration of – 3.90 m/s2, determine the speed of the jaguar before it began to skid.

a racecar driver steps on the breaks, changing his speed from 30 m/s to 15 m/s in 5.0 seconds. 1) How far does the racecar travel during the 5.0 s? (2). How fast is driver moving after 3.0 s? (3) How long does it take for the car to come to a complete stop?

If the average velocity of a car is nonzero for some time interval does this mean that the instantaneous velocity is never zero?

If a car has negative acceleration does this mean the car must be slowing down? Explain.

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

1. a 100kg astronaut (including the space suit) becomes untethered during a space walk and drifts to a distance of 10m from the mother ship. To get back to the ship, he throws his 2.5kg tool kit away with an acceleration of 8.0ms-1 that acts over 0.50s. a) How does throwing the tool kit away help the astronaut in the situation? b) How large is the fact that acts on the tool kit and the astronaut? c) With that speed will the astronaut drift to the mother ship? d) How long will it take for the astronaut to reach the ship?

A certain car is capable of accelerating at a rate of 0.61 m/s2. How long does it take for this car to go from a speed of 40 mi/h to a speed of 50 mi/h? (No Response) S

A person is driving on Autobahn at a speed of 215 km/h and has to slam on his brakes to avoid collision. The brakes can slow down the car at a rate of 14.4 m/s2 (7marks) a) how long will it take to stop? b) how far will the car travel while slowing down to stop?

Which of the following describes an object which is NOT speeding up? a)  v = -1 m/s, a = -8 m/s^2 b) v = 3 m/s, a = 4 m/s^2 c) v = 7 m/s, a = -2 m/s^2 d) v = 0 m/s, a = -6 m/s^2