Answer:
<h2>Changes</h2>
Explanation:
<h3>Variable is something that varies and doesn't remain constant.</h3>
Gravitational force has a major part in the affect of the ball
Answer:
3.13 eV
Explanation:
E = hf
f =7.57 x 10' Hz.
h = 6.62× 10-34Js
E = 6.62× 10-34 × 7.57 x 10' Hz
E = 5.011× 10^ -30 J
1eV = 1.6×10^-19J
Hence ,
5.011× 10^ -30 J ÷1.6×10^-19J
= 3.132×10^-49
Newton's first law of motion. Because you fly over the handlebars and you land a few feet away on the ground. Your bike would stop immediately because of the unbalanced force.
Answer:
Acceleration of the cart in the beginning is positive
Speed is positive when speeding up and slowing down.
Speed is zero when the cart stops.
Speed is negative when the cart speeds up in opposite direction.
Acceleration is negative when speeding up in opposite direction from rest.
Explanation:
When the cart is speeding up then its speed is increasing with time hence its acceleration is having a positive value.
- On speeding up the velocity is positive.
- On gradually decreasing the speed and coming to a stop the velocity is still positive with continuously decreasing magnitude until it reaches zero when the cart stops.
- When the cart speeds up in the opposite direction then the velocity of the cart becomes negative from zero and continuously increases in the negative value over a span of time hence its acceleration is also negative.
