Answer:
11.7 im pretty sure. i did the work so it should be correct
A.
Newton's first law. When the bus starts, Shelly is still at rest so she resists motion. (When the bus stops, she'll jolt forward)
Answer: Less rain for sure.
Explanation: Without clouds forming over the ocean, rain would be incredibly rare, and the planet would become desert. So if we were to lose all oceans, less rain and clouds would form and eventually we could run out of water. I hope this helps:)
Answer:
W = 20 J
Explanation:
Given that,
The mass of a loaded sack, m = 1000 g = 1 kg
It falls down from the floor of a lorry 200 cm high, h = 2 m
We need to find the work done by the gravity. The work done by an object under the action of gravity is given by :
W = mgh
Substitute all the values,
W = 1 × 10 × 2
= 20 J
Hence, the required work done by gravity is equal to 20 J.