You'd use the equation kinetic energy=mass*0.5*speed^2
So you'd rearrange this to get mass =kinetic energy /0.5 *speed^2
Which is mass= 1500J/0.5*35^2
=2.44897959183673469........kg

5 0

3 years ago

A man walks 30m to the west, then 5m to the east in 45 seconds. What was his displacement?

AleksandrR [38]

The displacement is the distance from the beginning point to the ending point. The time was just to throw you off. If he walks 30m due west, and then 5m due east, his displacement would be 30-5=25m to the west.

6 0

3 years ago

A student gathered two boxes of the same size made of different materials glass and clear plastic. She placed them on a windowsi

ch4aika [34]

Answer:

dependent variable

Explanation:

8 0

3 years ago

The tomato is dropped. What is the velocity, v, of the tomato when it hits the ground? Assume 85.6 % of the work done in Part A

IRISSAK [1]

Answer:

$v = 4.1 \sqrt{h}$

Explanation:

Let the mass of tomato is m and the height from which it falls is h.

Let the tomato its the ground with velocity v.

The potential energy of the tomato at height h

U = m x g x h

The kinetic energy of tomato as it hits the ground

K = 1/2 mv^2

According to the question,

85.6 % of Potential energy = Kinetic energy

$\frac{85.6}{100}\times m\times g\times h = \frac{1}{2}\times m\times v^{2}$

$v = 4.1 \sqrt{h}$

7 0

4 years ago

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