Which best describes sid’s error?

tangential speed changes throughout a satellite’s orbit.
centripetal force is perpendicular to the velocity of the satellite.
tangential speed increases with a satellite’s increasing distance from earth.
centripetal force can sometimes slow down a satellite in orbit.

Centripetal force is perpendicular to the velocity of the satellite.

This is becuase Tangent is always perpindicular to radial (centripital)

Imagine swining a ball around a string. The string pulls the ball towards the centre (radial) while the balls own velocity moves it forward (tan).

The horizontal and vertical forces create a diagnal force which makes the circular path!

a and b sometimes have a positive value

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.