Answer:
(a) gravitational potential energy converted to kinetic energy
(b) chemical energy is converted to light or heat energy
(c) mechanical energy is converted into kinetic energy
(C)Green and blue
Just took a test in science with this!
Answer:
20600N
Explanation:
Given parameters:
Mass of the roller coaster = 515kg
radius = 10m
Speed = 20m/s
Unknown:
Force of the track pushing up on the vehicle = ?
Solution:
The force pulling the roller coaster along the track is the centripetal force.
To find the centripetal force, use the expression below;
F =
where;
m is the mass
v is the speed
r is the radius
Now insert the parameters and solve;
F = = 20600N
The displacement of an object in relation to time is velocity.
Speed is similar, but it is actually the distance traveled in relation to time. The difference is that say if an object is spinning at one revolution per second, the speed of the edge is 'x' mps. The velocity on the other hand is 0 mps because the disk rotates at 1 rotation per second the displacement after one second is 0.