Question Detail

PHY 101 PHY 101 Past Questions Objective Question
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Question

A car and a delivery truck both start from rest and accelerate at the same rate. However the car accelerates for twice the amount of time as the truck. What is the final speed of the car compared to the truck?
Options
A Half as much
B The same
C Twice as much
Correct Answer
D Four times as much
Correct Answer

Option C is the correct answer.

Detailed Explanation

Starting from rest, v = at. If acceleration a is the same, and car accelerates for twice the time, then v_car = a(2t) = 2(at) = 2v_truck.

Hint

For constant acceleration from rest, final velocity is proportional to time.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 873 of 1250
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