Which of the following is an example of Newton’s first law of motion?

Physics

2 answers:

Zina [86]3 years ago

8 0

Answer:

I think first one

Explanation:

Because his first law of motion was every object will remain at rest or uniform motion in a straight line

marysya [2.9K]3 years ago

3 0

Answer:

Sam's bike hits a curb and he flies over the handlebars, onto the grass.

Explanation:

As we know that: Newtons first law of motion states that a body continues to remain in the inertia of rest or motion, unless it is forced to change by applying an unbalanced force. Sam's bike is in uniform motion when suddenly the curb(external force) hits it and makes Sam to fall.

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Which two factors does the power of a machine depend on?

lianna [129]

The power of a machine depend on two factors are work and time.

Option C

<u>Explanation:</u>

In science, power defined as the amount of work done in a unit time. i.e. delivering work in a rate of time or energy supply, expressed in input of work or transmitted energy divided by the time interval (t) or W/t.

Example: Some work can be done in the long run with a low-power engine or in a short time with a motor with high performance. The equation for power can be given as

$Power\ (in\ watts) =\frac{\text { work (joules) }}{\text { time (seconds) }}$