# Science

John is pushing a wheelbarrow filled with sand on a building site.The total mass of the wheelbarrow and it's contents is 30kg.When he applies a force of 20N, the wheelbarrow moves forward at a constant speed.
The foremn shouts at John to hurry up , and he increases his pushing force to 50N

Calculate the wheelbarrows acceleration.

1. 👍 0
2. 👎 0
3. 👁 37
1. the additional 30 N force, accelerates the the 30 kg wheelbarrow at 1 m/s^2

a = f / m = 30 n / 30 kg

1. 👍 0
2. 👎 0
posted by R_scott

## Similar Questions

1. ### PHYSICAL SCIENCE

JOHN IS PUSHING A WHEELBARROW FILLED WITH SAND ON A BUILDING SITE THE TOTAL MASS OF THE WHEELBARROW AND ITS CONTENTS IS 3O KG DRAW A LABELLED FREE BODY DIAGRAM OF ALL FORCES THAT ACT ON WHEELBARROW

asked by Anonymous on February 5, 2019
2. ### Physics

John is pushing a wheelbarrow filled with sand on a building site the total mass of the wheelbarrow and its content is 30kg. When he applies force of 20 the wheel barrow moves forward at constant speed. What is the Magnitude of

asked by neo on March 16, 2013
3. ### Physical science

John is pushing a wheelbarrow filled with sand on a building site and its content is 30 Kg.When he applies a force of 20 N,the wheelbarrow moves forward at a constant speed. What is the magnitude of friction between the wheels and

asked by Itumeleng on February 19, 2019
4. ### Physics

A boy pushing a wheelbarrow carry cement bags observe that the road was told with so much sand what can he do to ensure that he pushes the wheelbarrow across.?

asked by Maballs on October 8, 2019
5. ### math

Todd is moving sand from his driveway to the backyard. The wheelbarrow weighs 30 kilograms when it is full of sand. When it is empty, it weighs 12 kilograms. How many grams of sand did Todd move if he filled and emptied the

asked by mi on May 2, 2013
6. ### Science

Carla applied a force of 35 N to a wheelbarrow full of bricks and moved it 2.5 m. Which of the following can be determined from this information? The wheelbarrow supplied 87.5 J of work. The wheelbarrow has a mechanical advantage

asked by Science question, please don't give direct answer. on December 14, 2016
7. ### physics

A pupil pushes a wheelbarrow carrying 30kg sand it accelerates from rest to 2m/s in the distance of 1m. If the friction is on the wheelbarrow is 0.5n find accelaration

asked by francis on January 22, 2019
8. ### Urgent Science~!

Carla applied a force of 35 N to a wheelbarrow full of bricks and moved it 2.5 m. Which of the following can be determined from this information? The wheelbarrow supplied 87.5 J of work. The wheelbarrow has a mechanical advantage

asked by Gabby on December 10, 2013
9. ### Algebra 1

Weight(n)=mass (kg)*gravity(m/s^2) Nolan pushes a 500 kg wheelbarrow.What is the weight of the wheelbarrow? A.After he dumps the wheelbarrow,it weighs only 200 N.What its mass?

asked by Tammy on September 1, 2019
10. ### physics

a worker pushing a wheelbarrow of mass 50 kg with a constant velocity along a horizontal surface whose coefficient of friction is 0.5 and the angle of force is 30 degree

asked by Anonymous on October 12, 2011
11. ### Math

At a certain construction site, there is a pile containing 55 tons of sand. Four trucks, each of which holds 11.4 tons of sand, are filled from this pile. How many tons of sand remain in the pile? A. 9.4 B. 16.2 C. 20.8 D. 32.2 E.

asked by Neil on January 27, 2014

More Similar Questions