Question

An archer pulls an arrow of weight 1.5 kg and the bow stores potential energy
equal to 100 J. If 73% of the energy is lost, then the speed (in m/s) at which the
arrow will travel is:
3
6
9
12
​

Answer 1

Answer:

12

m travel to be a great day

Answer 2

Given - Energy and mass

Find - Speed

Solution - The speed of the arrow will be 9.9 m/s.

The 73% of the given energy = 73/100*100

New energy = 73 Joules

Now, the potential energy stored in the bow will be converted to the kinetic energy of the arrow, which will cause it to travel.

So, 73 Joules will be equal to kinetic energy.

Kinetic energy = 1/2 * mass * velocity²

73*2/1.5 = velocity²

Velocity² = 146/1.5

Velocity² = 97.3

Velocity = ✓97.3

Velocity = 9.9 m/s.

Thus, the speed of the arrow will be 9.9 m/s.