Maths4U Original · Short practice

A particle has mass 5 kg and initially moves at speed \(\displaystyle \frac{7m}{s}\). Compare the stated separate speed changes without changing its mass.

Find its initial kinetic energy in J.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 6 kg and initially moves at speed \(\displaystyle \frac{8m}{s}\). Compare the stated separate speed changes without changing its mass.

Find its initial kinetic energy in J.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 6 kg and initially moves at speed \(\displaystyle \frac{8m}{s}\). Compare the stated separate speed changes without changing its mass.

Find its kinetic energy if its speed is doubled, in J.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 7 kg and initially moves at speed \(\displaystyle \frac{9m}{s}\). Compare the stated separate speed changes without changing its mass.

Find its kinetic energy if its speed is doubled, in J.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 7 kg and initially moves at speed \(\displaystyle \frac{9m}{s}\). Compare the stated separate speed changes without changing its mass.

Find the increase in kinetic energy when its speed is doubled, in J.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 8 kg and initially moves at speed \(\displaystyle \frac{10m}{s}\). Compare the stated separate speed changes without changing its mass.

Find the increase in kinetic energy when its speed is doubled, in J.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 8 kg and initially moves at speed \(\displaystyle \frac{10m}{s}\). Compare the stated separate speed changes without changing its mass.

Find the speed in m/s when its kinetic energy is nine times the initial value.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.

Maths4U Original · Short practice

A particle has mass 9 kg and initially moves at speed \(\displaystyle \frac{11m}{s}\). Compare the stated separate speed changes without changing its mass.

Find the speed in m/s when its kinetic energy is nine times the initial value.

Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.