Asked Dec 17, 2019

A mechanic pushes a 2.50 x 103- kg car from rest to a speed of v,
doing 5.00 x 103 J of work in the process. During this time, the
car moves 25.0 m. Neglecting friction between car and road,
find (a) v and (b) the horizontal force exerted on the car.


Expert Answer

Step 1


The work done by the kinetic energy = kinetic energy of the car


Image Transcriptionclose

mv² = 5×10³J

Step 2

Rearrange the above equation to obtain an equation for ...


Image Transcriptionclose

mv² = 5×10²J (2.5×10 kg )v² =10×10³J 10*J V 2.5x10 kg = 2m/s


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Work,Power and Energy

Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Objects of masses m = 4.00 kg and m, = 9.00 kg are connected by a light string that passes over a fr...

A: a)Use kinematic equations,


Q: If you push on a heavy box that is at rest, you must exert someforce to start its motion. Once the b...

A: For a stationary block the resisting force is static frictional force.For a block in motion the resi...


Q: When you push against a wall with your fingers, they bend because they experience a force. Identify ...

A: Pushing against a wall means applying a force of an arbitrary magnitude F1 on the wall.When fingers ...


Q: A car starts from rest and travels for 5.0 s with a uniform accelerationof +1.5 m/s2. The driver the...

A: (a) The equation of motion is given by,


Q: Assume there are 100 million passenger cars in the UnitedStates and that the average fuel consumptio...

A: Gasoline consumed by a car in a year when the mileage 20 mi/gal is,


Q: As a mass tied to the end of a stringswings from its highest point down to its lowest point, it isac...

A: The figure for the arrangement is shown below,


Q: As an apple tree is transported by a truck moving to the right with a constant velocity, one of its ...

A: (i) For a stationary observer on ground, the apple acquires the horizontal velocity due to the motio...


Q: A 276-kg glider is being pulled by a 1 950-kg jet along a horizontal runway with an acceleration of ...

A: The free body diagram is given below.


Q: 4. In a certain Young's double-slit experiment, a diffraction pattern is formed on a distant screen....

A: the condition for the wavelength in Young's double slit experiment is