Question

work=force x distance = potential energy
n=newtons (force)

1)amy uses 20n of force to push a lawn mower 10 meters. how much work does she do?

f= 20n 20 x 10 w= 200 joules
d= 10m

2)how much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200n?

3)alex applies 350 n of force to move his stalled car 40 m, how much work did alex do?

4)tommy does 15 joules of work to push the pencil over 1 meter. how much force did he use?

Explanation:

Problem 2:

Step1: Identify formula and values

The formula for work is \( W = F \times d \), where \( F = 200 \, \text{N} \) (force) and \( d = 20 \, \text{m} \) (distance).

Step2: Substitute and calculate

Substitute \( F = 200 \) and \( d = 20 \) into the formula: \( W = 200 \times 20 \).
Calculate the product: \( 200 \times 20 = 4000 \).

Step1: Identify formula and values

Use \( W = F \times d \), with \( F = 350 \, \text{N} \) and \( d = 40 \, \text{m} \).

Step2: Substitute and calculate

Substitute into the formula: \( W = 350 \times 40 \).
Calculate: \( 350 \times 40 = 14000 \).

Step1: Rearrange the work formula

From \( W = F \times d \), solve for \( F \): \( F = \frac{W}{d} \).

Step2: Identify values and substitute

Given \( W = 15 \, \text{J} \) and \( d = 1 \, \text{m} \), substitute into the formula: \( F = \frac{15}{1} \).

Step3: Calculate the force

\( \frac{15}{1} = 15 \).

Answer:

The elephant does 4000 Joules of work.

Problem 3: