a.
The change in momentum of the dragster if a
a.
Answer to Problem 90A
Explanation of Solution
Given:
The mass of the dragster,
Initial velocity of the dragster,
Final velocity of the dragster,
Time taken,
Formula used:
Momentum of an object of mass m and moving with velocity v is given by,
Calculation:
Using the given values in above formula, the change in momentum will be
Conclusion:
Thus, the change in momentum of the dragster is
b.
The average force exerted on the dragster.
b.
Answer to Problem 90A
Explanation of Solution
The mass of the dragster,
Initial velocity of the dragster,
Final velocity of the dragster,
Time taken,
From part (a), the change in momentum of the dragster,
Formula used:
Momentum of an object of mass m and moving with velocity v is given by,
Impulse on an object is equal to the change in momentum of an object,
where
Calculation:
Then, using the given and calculated values in above formula, the magnitude of the force applied on the dragster will be,
Conclusion:
Thus, the magnitude of the force on the dragster is
c.
What exerts the above force in dragster.
c.
Answer to Problem 90A
Track through the friction.
Explanation of Solution
Introduction:
A
When a dragster moves on a race track, it experiences friction on the track due to which a force is exerted on it resulting in its change of momentum.
Conclusion:
Thus, the track through friction exerts a force on the dragster.
Chapter 9 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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