As you can see from the formula, if the object has no speed, then its kinetic energy is zero. That's why kinetic energy is usually called the "energy of motion", and if an object HAS kinetic energy, then that tells you right away that it must be moving.

4 0

3 years ago

What is the force on a 1025 kg elevator that is falling freely at 9.8 m/sec 2?

kicyunya [14]

Answer:

<h2>Given :-</h2>

Mass = 1025 kg
Acceleration = 9.8 m/s²

Force

<h2>Solution :-</h2>

We know that

F = mg

F = 1025 × 9.8

F = 10,045 N

Or,

10045/1000 = 10.045 Kilo Newton

$\\$

6 0

2 years ago

Which is more accurate slope o average?

Novay_Z [31]

As long as the graph is a straight line they both will give same answer. Edit: In the case of errors,I think the most fitting slope line is more accurate method,because taking average is same as drawing a line from initial to final point of the line and taking its slope.
Hope it helps

5 0

3 years ago

A car is moving at a constant speed of 14 m/s when the driver presses down on the gas pedal and accelerates for 14 s with an acc

Vinil7 [7]

acceleration of car is 1.8 m/s^2

time = 14 s

initial speed = 14 m/s

so the final speed is calculated by

$v_f = v_i + at$