The slope of an object's position-versus-time graph at time t is the object's. position at time t speed at time t average velocity between 0 and t velocity at time t acceleration at time t
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- A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car doing 40 m/s. At the instant the speeding car passes the police car, the police car accelerates from rest at 4m/s2 to catch the speeding car. How long does it take the police car to catch the speeding car?An airplane leaves Chicago and makes the 3000-km trip Los Angeles in 5.0 h. A second plane leaves Chicago one-half hour later and arrives in Los Angeles at the same time. Compare the average velocities of the two planes. Ignore the curvature of Earth and the difference in altitude between the two cities.Sketch the acceleration-versus-time graph from the following velocity-versus-time graph.
- Astronauts on a distant planet toss a rock into the air. With the aid of a camera that takes pictures at a steady rate, they record the rocks height as a function of time as given in the following table. (a) Find the rocks average velocity in the time interval between each measurement and the next. (b) Using these average velocities to approximate instantaneous velocities at the midpoints of the time intervals, make a graph of velocity as a function of time. (c) Does the rock move with constant acceleration? If so, plot a straight line of best fit on the graph and calculate its slope to find the acceleration.. (a) Draw an accurate graph of the speed versus time for the train Problem 24. (b) Draw an accurate graph of the distance versus time for the train in Problem 24.An object is dropped from a height of 75.0 m above ground level. (a) Determine the distance traveled during the first second. (b) Determine the final velocity at which the object hits the ground. (c) Determine the distance traveled during the last second of motion before hitting the ground.
- Plus and minus signs are used in one-dimensional motion to indicate direction. What is the sign of an acceleration that reduces the magnitude of a negative velocity? Of a positive velocity?Give an example of a device used to measure time and identify what change in that device indicates a change in time.A sperm whale can accelerate at about 0.0900 m/s when swimming on the surface of the ocean. How far will a sperm whale travel if it starts at a speed of 1.00 m/s and accelerates to a speed of 2.05 m/s? Assume the whale travels in a straight line. distance traveled: m contact us help about us privacy policy terms of use careers tv MacBook Air F10 F9 000 F5 F3 + & delete 2$ % 9 6 7 8 3 4 5
- Electric tricycle (commonly known as the e-trike) is slowly emerging as an environmental-friendly alternative means of transportation in some urban areas in the Philippines. The table presented shows a series of speedometer readings in an e-trike during a test run along a straight road. TIME (s) 6. SPEED (km/h) 7. ACCELERATION Find the average acceleration of the vehicle at each three-second interval. Considering each of the accelerations that you computed, is the e-trike is speeding up or slowing down? 9. 3.A total distance of travel of 1,000 km breaks every 100 km of a pattern of East-South-East-South continuously up to the end. The time of travel was recorded 5 hours. a. Find the average velocity of the travel. b. If a helicopter flies from the same origin, what will be its average velocity in an hour travel?The motion of an object is represented by the velocity-time graph. Find the acceleration of the object during each of the following time intervals. a) 0.0s to 4.0s b) 4.0s to 6.0s c) 6.0s to 12s