Section_2_Problems.pdf - 2nd Discussion Section PHYS 2210 Fall 2019 Please clearly print the names of your group members 1 3 2 4 Kinematics Practice

# Section_2_Problems.pdf - 2nd Discussion Section PHYS 2210...

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2nd Discussion Section PHYS 2210 Fall 2019 Please clearly print the names of your group members: 1 . ....................................................... 3 . ....................................................... 2 . ....................................................... 4 . ....................................................... Kinematics Practice Problem 1 A particle moving along the x -axis has its position described by the function: x =2 t 2 - t +1 where t is in seconds, and x measured in meters. Find: a) the velocity of the particle as a function of time v(t) b) the acceleration as a function of time a(t) c) Is this a motion at constant acceleration? Explain. d) Make a graph for x ( t ), v ( t ) and a ( t ) for any t 0.
Problem 2 A particle moving along the x -axis has its velocity described by the function: v =2 t 2 where t is in seconds, and its initial position is x 0 =1m. Find: a) the position of the particle as a function of time x(t)

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Unformatted text preview: b) the acceleration as a function of time a(t) c) Is this a motion at constant acceleration? Explain. d) Make a graph for x ( t ),v ( t ) and a ( t ) for any t ≥ 0. e) Describe the motion. What can it represent? Problem 3 (extra practice) Two cars are moving at 54 km/hr, one behind the other, on a road in Wasatch County. A deer jumps in front of the front car, and the driver slams on the brakes and stops. What is the minimum initial distance between the rear of the front car and the front of the second car such that the second car stops before colliding with the front car? For this problem, you can assume that the acceleration is identical for both cars and the driver of the second car begins braking 0.3 seconds after the front car brakes....
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