The variation of force with distance for a vehicle that is decelerating is shown in FIG 4. Force (kN) 24 12 distance (m) 300 600 FIG 4 1) If the vehicle covers the 600 m in 1.2 minutes, estimate the power needed to bring the vehicle to rest (a) 7.2 MW (b) 6 MW (c) 200 kW (d) 100 kW II) Comment on your power estimate. (a) The estimate is an over estimate. (b) The estimate is an under estimate. (c) The estimate is accurate.

The variation of force with distance for a vehicle that is decelerating is shown in FIG 4. Force (kN) 24 12 distance (m) 300 600 FIG 4 1) If the vehicle covers the 600 m in 1.2 minutes, estimate the power needed to bring the vehicle to rest (a) 7.2 MW (b) 6 MW (c) 200 kW (d) 100 kW II) Comment on your power estimate. (a) The estimate is an over estimate. (b) The estimate is an under estimate. (c) The estimate is accurate.

Name: The variation of force with distance for a vehicle that isdeceleratin
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: The variation of force with distance for a vehicle that isdecelerating is shown in FIG 4.Force (kN)2412distance (m)300600FIG 41)If the vehicle covers the 600 m in 1.2 minutes, estimatethe power needed to bring the vehicle to rest(a) 7.2 MW(b) 6 MW(c

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 79P: An electron in a television tube is accelerated uniformly from rest to a speed of 8.4107 m/s over a...

See similar textbooks

Similar questions

An electron in a television tube is accelerated uniformly from rest to a speed of 8.4107 m/s over a distance of 2.5 cm. What is the power delivered to the electron at the instant that its displacement is 1.0 cm?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance?
Cite two examples in which a force is exerted on an object without doing any work on the object.
A baseball of mass 0.25 kg is hit at home plate with a speed of 40 m/s. When it lands in a seat in the left-field bleachers a horizontal distance 120 m from home plate, it is moving at 30 m/s. If the ball lands 20 m above the spot where it was hit, how much work is done on it by air resistance?
As a young man, Tarzan climbed up a vine to reach his tree house. As he got older, he decided to build and use a staircase instead. Since the work of the gravitational force mg is path Independent, what did the King of the Apes gain in using stairs?
A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30s?
Two forces act to double the speed of a particle, initially moving with kinetic energy of 1 J. One of the forces does 4 J of work. How much work does the other force do?
A certain automobile engine delivers 2.24 104 W (30.0 hp) to its wheels when moving at a constant speed of 27.0 m/s ( 60 mi/h). What is the resistive force acting on the automobile at that speed?
A cart is pulled a distance D on a flat, horizontal surface by a constant farce F that acts at an angle with the horizontal direction. The other forces on the object during this time are gravity (Fw) , normal forces (FN1) and (FN2) , and rolling frictions Fr1 and Fr2 , as shown below What is the work done by each force?
The force F(x) varies with position, as shown beolow Find the work done by this force on a particle as It moves from x=1.0 m to x=5.0 m.
An electric scooter has a battery capable of supplying 120 Wh of energy. If friction forces and other losses account for 60.0% of the energy usage, what altitude change can a rider achieve when driving in hilly ter-rain if the rider and scooter have a combined weight of 890 N?
Can the power expended by a force be negative?