How much power would be needed to lift a 1.0x10^3N crate 1.5m in 5 seconds?

power =300watts

Explanation:

300 watts

Explanation:

Power = energy / time

First solve for energy

Energy = force x distance

Force = 1.0x10^3N

Distance = 1.5m

Energy = 1.0x10^3 x 1.5

= 1500j

Time = 5 secs

Therefore,

Power = 1500/5

300watts

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.

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.