Physics103: Practice 1Topics: Unit, 1D motionProblems:1.A student driving a car travels 10.0 km in 30.0 min. What was her average speed?2. Rolling along across the machine shop at a constant speed of 4.25m/s, a robot covers a distance of17.0 m. How long did the journey take?3. A car is traveling at 20.0 m/s when the driver slams on the brakes and brings it to a straight-linestop in 4.2 s. What is the magnitude of its average acceleration?An object starts from rest with a constant acceleration of 8.00 m/s² along a straight line, Find (a)the speed at the end of 5.00s, (b) the average speed of the 5-s interval, and (c) the distance4.traveled in the 5.00s.5. A stone is thrown straight upward with a speed of 20 m/s. It is caught on its way down at a point5.0m above where it was thrown. (a) How fast was it going when it was caught? (b) How long didthe trip take?

Solution: Given Values, Distance(D)=10 Km=10000 m Time(t)=30 min=1800 s

Answered: Problems: 1. A student driving a car…

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Problems: 1. A student driving a car travels 10.0 km in 30.0 min. What was her average speed?

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Question

Physics103: Practice 1
Topics: Unit, 1D motion
Problems:
1.
A student driving a car travels 10.0 km in 30.0 min. What was her average speed?
2. Rolling along across the machine shop at a constant speed of 4.25m/s, a robot covers a distance of
17.0 m. How long did the journey take?
3. A car is traveling at 20.0 m/s when the driver slams on the brakes and brings it to a straight-line
stop in 4.2 s. What is the magnitude of its average acceleration?
An object starts from rest with a constant acceleration of 8.00 m/s² along a straight line, Find (a)
the speed at the end of 5.00s, (b) the average speed of the 5-s interval, and (c) the distance
4.
traveled in the 5.00s.
5. A stone is thrown straight upward with a speed of 20 m/s. It is caught on its way down at a point
5.0m above where it was thrown. (a) How fast was it going when it was caught? (b) How long did
the trip take?

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