# Physics

A 25.0kg pickle is accelerated from rest through a distance of 6.0m in 4.0s across a level floor. If the friction force between the pickle and the floor is 3.8N, how much work is required to move the object?

1. 👍 0
2. 👎 0
3. 👁 577
1. d = Vo*t + 0.5a*t^2 = 6 m.
0 + 0.5a*4^2 = 6
8a = 6
a = 0.75 m/s^2.

Fp = m*g = 25kg * 9.8N/kg = 245 N. = Force of pickle.

!@#\$%^&-Fp-Fk = m*a
!@#\$%^&-245-3.8 = 25*0.75
!@#\$%^& = 18.75+245+3.8 = 267.6 N. = Force
applied.

Work = !@#\$%^& * d = 267.6 * 6 = 1605 Joules

1. 👍 0
2. 👎 2
posted by Henry
2. d = Vo*t + 0.5a*t^2 = 6 m.
0 + 0.5a*4^2 = 6
8a = 6
a = 0.75 m/s^2.

Fnet=m*a
Fnet=25*0.75=18.75 N

Fnet=!@#\$%^&-Ff
!@#\$%^&=Fnet+Ff
!@#\$%^&=18.75+3.8=22.55 N

W=!@#\$%^&*d
W=22.55*6=135.3 J

1. 👍 3
2. 👎 0
posted by Marco

## Similar Questions

1. ### physics

A 25.0 kg pickle is accelerated from rest through a distance of 6.0 m in 4.0 s across a level floor. If the friction force between the pickle and the floor is 3.8 N, what is the work done to move the object?

asked by steve on November 6, 2011
2. ### Physics

A 2.0kg object initially at rest explodes breaking into two pieces of mass 5.0kg and 15.0kg. If the 15.0kg piece moves with a speed 2m/s what is the speed of the 5.0kg piece? A. -6 m/s B. 15 m/s C. -5 m/s D. 20 m/s

asked by Natalie on April 6, 2015
3. ### Physics

I know how to get the speed if it accelerated the whole time. How do I calculate the cruising speed? Starting from rest, a car travels 1,350 meters in 1 min. It accelerated at 1 m/s^2 until it reached its cruising speed. Then it

asked by Colin on September 7, 2007
4. ### Physics

A father skating pushes a baby in a cart over a distance of 100m. The father starts from rest and wants to reach a speed of 5.0m/s, How hard does the father need to push in the direction of the motion? The cart has a mass of

asked by Anonymous on October 31, 2018
5. ### phisics

a car starts from rest and is accelerated uniformly and the rest of 2m/s2 for 6seconds it then maintaining a constant speed for half a minutes.The brake are then applied and then vehicles unifomly restarted to rest in

asked by sam on November 8, 2016
6. ### science

an electron moves a distance of 6.0 cm when accelerated from rest by an electric field of strength 2*10^4 n/c . Calculate the time of travel?

asked by Anushka Goswami on June 27, 2019
7. ### Physics

A motorcycle with a mass of 350 kg is accelerated from rest to a velocity of 30 m/s by a force of 4000 N. calculate the distance over which this acceleration occurred.

asked by helpp on April 19, 2011
8. ### chemistry

A 10 milliliter sample of HCl pickle is titrated with 0.2 N NaOH to a phenol-phthalein end point and it is found that 6.5 milliliters are used. What is the concentration of HCl in the Pickle in grams per liter? In weight Percent?

asked by bob on February 3, 2012
9. ### Physics

A car starting from rest is uniformly accelerated so that it's velocity in 5 seconds is 36 km/h . It travels at this velocity for 5 seconds, and then a brake is applied to bring it to rest in the next 5 seconds. Find the total

asked by Claire on October 3, 2016
10. ### physics

A horizontal force of 50N is applied to a 2.0Kg trolly, initially at rest, and it moves a distance of 4.0m along a level, frictionless. The force then changes to 20N and acts for an aditional distance of 2.0m. a) what is the the

asked by Alemu on December 3, 2009

More Similar Questions