Agolf ball is hit by a club. the graph shows the variation with time of the force exerted on the balby the club. which quantity, for the time of contact, cannot be found from the graph? a the average force on the ballb the change in momentum of the ballc the contact time between the ball and the clubd the maximum acceleration of the ball

D the maximum acceleration of the ball

Explanation:

A the average force on the ball

Total change in momentum of the ball is area under the graph between force and time

So here average force is the ratio of area under the force time graph and total time of the graph

B the change in momentum of the ball

Total change in momentum of the ball is area under the graph between force and time

C the contact time between the ball and the club

Here total time of contact is the total time for which force is acting on the ball due to wall

D the maximum acceleration of the ball

Here since we do not know about the mass of ball we can not find the acceleration.

So here we have correct answer as

D the maximum acceleration of the ball

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards