Please please help me, don't guess please my test is timed !! A tennis player hit a .057-kg ball with a force of 40 N. The duration of the force was .05 s.
1. Calculate the impulse delivered to the ball. (1pt)

2. What was the change in momentum of the ball? (1pt)

3. What was the velocity of the ball as it left the tennis racket? (1pt)

4. What would happen to the ball's velocity if it remained on the tennis racket longer than .05 s? (2pts)

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

Physical science b final exam bernoulli’smovepowercompound translucent the sun i was having such a pain for this searching every question so i hope i made someone happy

Answer: 1.4 seconds which is the third optionexplanation: current is defined as the flow of charge per timetherefore, the equation that relates current, charge and time can be expressed as follows: i = δq / δtwhere: i is the current given = 1.8 ampereδq is the charge given = 2.5 coulombδt is the time required for the flow of the given charges to give the 1.8 ampere.substitute with the givens in the above equation to get the time as follows: 1.8 = 2.5 / δtδt = 2.5 / 1.8 = 1.38888 which is approximately 1.4 secondshope this was !