理科の宿題を娘が持って来て困りました。どなたか教えて下さい。dokanshiさん
理科の宿題を娘が持って来て困りました。どなたか教えて下さい。
If a toy cart is pushed, which is twice heavier(assuming it has the same speed),what is its kinetic energy compared with that of the lighter toy cart? By how much is it greater or smaller ?
supply the missing values in the table.
solve the following
1.a ball having a mass of 5kg moves at 2m/s . What is its kinetic energy?
2.compute for the kinetic energy of a 2000kg car that moves at a 50km/h speed.
3.consider an object with mass m and moving at speed v
a. compare its original kinetic energy with its kinetic energy if its mass is tripled.
b. if its speed is reduced to half its original value,by how much does its kinetic energy decrease?
<data table>
kinetic energy of cart(J),, 0.2,,,0.2,,,0.2,,,0.1,,,,0.3,,,0.4
mass of cart(kg),、、、、、,,,,1,,,,,,,,,2,,,,,,,,4,,,,,,,( ),,,,,,,2,,,,,,( )
speed of cart(m/s)、、、、,,,,( ),,,,,,( ),,,,,( ),,,,,0.5,,,,,( ),,,,0.5