Question

The percentage error in measurement of mass and
speed of an object are 4% and 3% respectively. The
percentage error in estimation of kineticenergy
obtained by measuring its mass and speed will be​

Answer 1

Explanation:

Given percentage errors in mass and velocity = 2% and 3% respectively

The kinetic energy of the particle is given by

KE =

2

mv

2

The percentage error in kinetic energy will be

m

Δm

×100+2

v

Δv

×100

= 2+6

= 8%

Answer 2

Explanation:

Given percentage errors in mass and velocity = 2% and 3% respectively

The kinetic energy of the particle is given by

KE =

2

mv

2

The percentage error in kinetic energy will be

m

Δm

×100+2

v

Δv

×100

= 2+6

= 8%