Exam 2: Linear Motion

A balloon is ascending at a rate of 16 ft/s to a height of 32 ft above the ground when a package is dropped. The time taken, in the absence of air resistance, for the package to reach the ground is

A car accelerates uniformly from a velocity of 10 km/h to 30 km/h in one minute. Which graph best describes the motion of the car?

A graph showing motion of an object is plotted with the velocity on the vertical axis and the time on the horizontal axis. The graph is a straight line. Which of these quantities CANNOT be determined from this graph?

Which of the v versus t graphs shows a motion of a particle with the highest acceleration?

A distracted driver going along a parkway at constant speed of 14 m/s passes a police car parked at the sidelines. If the police car takes 4.0 s to take off and chases the distracted driver accelerating at a rate of 2.0 m/s², how long until it catches with the distracted driver's car?

Which graph of v versus t best describes the motion of a particle with positive velocity and negative acceleration?

The graph shows how the position of a particle depends on time. Which choice is closest to the average speed of the particle in the time interval between 0 and 6 s?

The graph is a plot of velocity versus time for a moving object during a particular time interval. Which of the following statements is correct?

An object is thrown upward with a velocity of 9.8 m/s from a stationary balloon that is 14.6 m above the ground. If air resistance is ignored, the total time until the object impacts the ground is

An object is dropped from rest near the surface of Earth. If the time interval during which it falls is doubled, the distance it falls will

A particle moves from x₀ = 30 cm to x = -40 cm in 5 s. The average velocity of the particle during this time interval is

On a graph that shows position on the vertical axis and time on the horizontal axis, a parabolic curve that opens downward represents

A ball is dropped from the top of a building. In the absence of air resistance, the ball will hit the ground with a speed of 49 m/s. The height of the building is

A balloon is ascending at a rate of +4.00 m/s to a height of 11.0 m above the ground when a package is dropped. In the absence of air resistance, the velocity of the ball when it hits the ground is

A vehicle is traveling in the -x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the velocity n of the vehicle is

A car is traveling at 120 km/h 75 mph). When applied the braking system can stop the car with a deceleration rate of 9.0 m/s². The typical reaction time for an alert driver is 0.5 s versus 2 s for a sleepy driver. Assuming a typical car length of 5 m, calculate the number of additional car lengths it takes the sleepy driver to stop compared to the alert driver.

A car accelerates uniformly from rest to a speed of 20 m/s at the end of 1 min; it then accelerates uniformly to a speed of 40 m/s at the end of the next minute. During this 2-min period, the average speed of the car is

A car and a truck, starting from rest, have the same acceleration, but the truck accelerates for twice the length of time. Compared with the car, the truck will travel

A common statistic in car tests is the standing starting from rest) quarter-mile performance. A modern sports car can achieve a terminal speed speed at the end of the quarter-mile) of 120 mph 193 km/h). How does the average acceleration compare to g? 0.25 mile = 402 m)

The motion diagram shows motion an ant moving to the right along a straight line as it is recorded every 1.0 s, starting at point at x = 0.0 cm. Assuming the ant starts from rest, which graph shows ant's position as a function of time?