Serena williams can serve a tennis ball with 750 newtons of force. the ball and racquet are in contact for 0.003 seconds. what is the impulse exerted on the tennis ball? impulse = f ∙ t question 5 options: 0.0004 n∙s 2.25 n∙s 250,000 n∙s now

2.25 Newton.seconds

Impulse is a rate of change of the momentum. It is calculated as a product of the average force over a time interval. Both measures are given here, so we can just apply the formula:

(impulse) = (avg. force) x (duration) = (750 N) x (0.003 s) = 2.25 N.s

magnityde and direction

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.