Two cars travel in the same direction along a straight highway,one at a constant speed of 55 mi/h and the other at 70 mi/h.(a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 10 mi away? (b) How far must the faster car travel before it has a 15-min lead on theslower car?

(b) The speed of a train is reduced uniformly from 20 km/h to 10 km/h while travelling a distance of 80 m. (i) Calculate the deceleration of the train. (ii) Assuming that the deceleration is constant, how much further will the train travel before coming to rest? (iii) Determine the total time taken for the train to come to rest from a speed of 20 km/h. (iv) Sketch the velocity versus time graph for the motion of the train.

The speed of a train is reduced uniformly from 20 km/h to 10 km/h while travelling a distance of 80 m.   (i)   Calculate the deceleration of the train. (ii)  Assuming that the deceleration is constant, how much further will the  train travel before coming to rest? (iii)  Determine the total time taken for the train to come to rest from a speed of 20 km/h. (iv)  Sketch the velocity versus time graph for the motion of the train.

A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s to take off and it accelerates from rest at an average rate of 0.35 m/s² how far will it travel before becoming airborne?

An initially stationary hovercraft sits on a large lake. Whena whistle blows the hovercraft accelerates due north at a rate of1.2 m s−2for 10 s, does not accelerate at all for the next 10 s, andthen accelerates at a rate of 0.6 m s−2 due east for another 10 s. Thehovercraft then coasts for another 10 s without any acceleration.(a) What is the velocity of the hovercraft 40 s after the whistleblows?(b) What is the displacement of the hovercraft 40 s after thewhistle blows?

1. (I) What must be your car's average speed in order to travel 235 km in 3.25 h? 2. (I) A bird can fly 25 km/h. How long does it take to fly 15 km? 3. (I) If you are driving 110 km/h along a straight road and you look to the side for 2.0 s, how far do you travel during

A car with good tires on a dry road can decelerate (slow down) at a steady rate of about 5.0 m/s2 when braking. If a car is initially traveling at 55 mi/h (a) how much time does it take the car to stop? (b) what is its stopping distance?

A bicyclist is finishing his repair of a flat tire when a friend ridesby with a constant speed of 3.5 m>s. Two seconds later the bicyclisthops on his bike and accelerates at 2.4 m>s2 until he catches hisfriend. (a) How much time does it take until he catches his friend?(b) How far has he traveled in this time? (c) What is his speedwhen he catches up?

On a 200 km bike cycle ride, you ride the first 90 km at an average speed of 20 m/s. What mustyour average speed over the next 40 km be to have your average speed for the total 200 km be?(b) Given this average speed for the first 90 km, can you possibly attain an average speed of80 m/s for the total 200 km ride? Explain.