Abus is moving down a road at a velocity of +30 m/s. a car is moving in the same direction at a velocity of +35 m/s. relative to the car, what is the velocity of the bus?

Explanation:

Here we need to apply the concept of relative speed in one dimension.

When we talk about relative speed, we refer to the speed of an object from the point of view of another moving object. Like this proble, we have to moving objects in the same direction, and we want to know the the speed of the bus relative to the car, that is, from the point of view of the car.

So, we can define relative speed as

We know that

Replacing each velocity, we have

Therefore the velocity of the bus, relative to the car, is 5m/s.

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.