TEAM 1
Energy is defined as ability to do work.
True
The longer the time taken to do the work, the greater the power is produced.
False
The factors that affect the work done.
Force and displacement
What is the S.I unit for energy?
Joule
Tiara with a mass of 58 kg climbs up 15 stairs. Each stair has a height of 25 cm.
Calculate the work done by Tiara.
2175 J
A girl is pushing her bicycle with a force of 40N through a distance of 3 m. Calculate the amount of work done.
120J
A box of mass 15 kg is lifted from the floor onto a table, at a height of 0.7 m. Calculate the amount of work done?
105 J
One object was pushed with 20 N force at a distance of 10 m. what is the work done?
200 J
An object was pulled up 5m above the floor with 30 N force.
What is the work done?
150 J
Tiara with a mass of 58 kg climbs up 15 stairs. Each stair has a height of 25 cm.
If tiara carries a pail of water of 4 kg and climbs up the same stairs, what is the work done?
2325 J
How much work did Encik Razak do when he pushed a wheelbarrow full of bricks with a force of 250 N through a distance of 4m?
1000 J
17 kg
An elevator with passengers weighs 1000 kg. The elevator moves up 40 mete in 25 seconds. Calculate the power of the elevator.
16 000 W
A man weighing 75 kg climbs up the stairs as shown in the diagram below. He takes 10 seconds to get to the top of the stairs
1650 J
A man weighing 55 kg climbs up the stairs as shown in the diagram below. He takes 3 minutes to get to the top of the stairs
99 000 J
A man of mass 60 kg walks up the stairs of 5m.
calculate the work done.
3000 j
A man of mass 60 kg walks up the stairs of 5m.
Calculated the power generated by the man if he takes 24 seconds to reach the top.
125 W
A women uses 55 N force to push a trolley filled with groceries to a lift.
Calculate the work done.
9900 J
A girl pushed her bicycle with a force of 40 N through a distance of 3 M. Calculate the amount of work done
120 J
A women uses 55 N force to push a trolley filled with groceries to a lift.
Calculate the power generated by the woman if she takes 6 minutes to reach the lift.
27.5 W
A man of mass 60 kg walks up the stairs of 5m.
What is the energy used to walk up the stairs?
3 000 J
A student runs up a stadium staircase with a height of 4m. the student's mass is 45 kg and it takes him 10 seconds to reach the top.
calculate the power
180 W
A women uses 55 N force to push a trolley filled with groceries to a lift.
What is the energy used to push the trolley?
9900 J
A box of mass 15 kg is lifted from the floor onto a table, at a height of 0.7 m. Calculate the amount of work done.
105 J