9. Study the velocity - time graph of a car given below and answer the following
questions
40
velety im's
200
B
0
Time )
a) State the type of motion represented by OA, AB and BC
b) What is negative acceleration?
Answer perfect B option
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9. Study the velocity - time graph of a car given below and answer the following
questions
40
velety im's
200
B
0
Time )
a) State the type of motion represented by OA, AB and BC
b) What is negative acceleration?
Answer perfect B option
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Verified answer
Given:
The velocity-time graph of a car
To find:
a) State the type of motion represented by OA, AB and BC
b) What is negative acceleration?
Solution:
a)
OA - uniformly accelerated motion.
AB - constant speed, hence uniform motion.
BC - motion with uniform negative acceleration.
b)
Negative acceleration - the acceleration in the direction opposite to that of the velocity.
Acceleration of car from O to A = (60 - 0) / (15 - 0) = 4 m/s^2
Negative acceleration of the car from B to C = (60 - 0) / (75 - 45) = -2 m/s^2 (Retardation)