Answer:
t = 3 seconds
Explanation:
Given that,
Initial speed, u = 30 m/s
Final speed, v = 0
It slides 45 m to rest.it take the box to come to rest
We need to find how long it take the box to come to rest.
Let a be the acceleration and t is time.
Now finding time.
So, the required time is 3 seconds.
Answer:
Burning Paper
Explanation:
This is a chemical reaction, because new substances are formed
It is false. The effect of freezing is almost the exact opposite
Explanation:
The simplest kinetic model is based on the assumptions that: (1) the gas is composed of a large number of identical molecules moving in random directions, separated by distances that are large compared with their size; (2) the molecules undergo perfectly elastic collisions (no energy loss) with each other and with the ...
Answer:
Explanation:
We can use Newton's Universal Law of Gravitation to solve this:
,
Plugging in given values, we have the equation:
.
Solving, we get:
.
