A. Draw velocity versus time graph for the car\'s motion. b. What was the accele

Question

A. Draw velocity versus time graph for the car's motion. b. What was the acceleration of the car while the brakes are applied? c. How far did the car travel from the moment the driver saw the deer to the full stop. d. It the car was moving at the speed of 25 miles/hr, how far would the car travel before coming to the rest. You were driving your car at the maximum suggested speed of 70 mile/hr in 1-70 highway to your grandma's house 110 miles away. Your friend was however driving at 5 miles higher speed than maximum suggested speed. a. If both of you started at the same time and traveled at the same average speed, how long ahead your friend will arrive to Grandma's house? b. How far you were behind when your friend has just reached to the Grandma's house? A motorcycle moves according to the position versus time graph shown in below. Sketch the graph of velocity versus time and acceleration versus time. Indicate the region if the motion is lacity, constant acceleration or rest.

Explanation / Answer

Answer:-

VA = 70 mile/hour

L = 110 miles .

VB = 75 miles/hour

a ] Let conisder the VA is own speed and VB is friends speed .

so find the time of own first . VA = L/t

t = L/VA = 110 / 70 = 1.57 hours.

now find the time required for Friend.

  t = L/VB = 110 / 75 = 1.46 Hours.

now calculate the difference in hours = 1.57-1.46 = 0.11 hours.

Hence the friend 0.11 hours long ahead arrive at the Grandma's House.

b] The difference we have calcualted 0.11 Hours i was behind.

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