Ferns spread spores instead of seeds, and some ferns eject the spores at surprisingly high speeds. One species accelerates 1.4 μg spores to a 4.5 m/s ejection speed in a time of 1.0 ms. What impulse is provided to the spores? What is the average force on a spore?

Q: A baseball (mass = 0.145kg) traveling to the left at 27m/s. It is hit by a bat and ends up traveling…

A: Given data: Mass (m) = 0.145 kg Initial velocity (Vi) = 27 m/s, to the left Final velocity (Vf) = 41…

Q: The three balls in the overhead view of the figure are identical. Balls 2 and 3 touch each other and…

A: speed of the ball 1 before collision, vo = 7.31 ms

Q: A professional golfer is examining a video of a practice swing. The high‑speed footage shows that…

A: the magnitude of the impulse imparted to the ball by the club is I=Δp=mvf-vi=0.0459 kg176…

Q: Two particles m; = 5kg and m2 = 10kg moving as shown in the figure. If v- = 2m/s and v2 = 6m/s. If…

A:

Q: A 5.0-oz baseball arrives at the bat with a speed of 160 ft/s. It remains in contact with the bat…

A: Given Mass m = 5 oz Initial velocity u = 160 ft/s Final velocity v = -280 ft/s Time t = 0.02 s

Q: 41. Krizzle pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40…

A:

Q: A baseball of mass m = 0.26 kg is dropped from a height h1 = 2.05 m. It bounces from the concrete…

A: V1= 2gh1= 2×9.81×2.05= 6.342 m/sV2= 2gh2= 2×9.81×1.63 = 5.655 m/s

Q: A 140 g ball with speed 7.8 m/s strikes a wall perpendicularly and rebounds in the opposite…

A: Given:  mass of ball, m = 140 g = 0.14 kg  initial velocity, u = - 7.8 m/s  final velocity, v = 7.8…

Q: A 0.188 kg baseball, thrown with a speed of 44.3 m/s, is hit straight back at the pitcher with a…

A:

Q: A 3kg particle is moving horizontally with a speed of 2 m/s when it strikes a vertical wall. The…

A: Mass of particle: m =3 kgInitial velocity of particle: u = 2m/sFinal velocity of particle: v = -1…

Q: Far in space, where gravity is negligible, a 425 kg rocket traveling at 75.0 m/s in the positive…

A: Given data The mass of the rocket is: m = 425 kg The initial speed of the rocket is: u = 75 m/s The…

Q: A ball of mass 0.155 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to…

A: Calculate the velocity just before strike with the floor. v = sqrt(2gh)   = sqrt(2*9.81*1.25)   =…

Q: A player bounces a 0.44-kg soccer ball off her head, changing the velocity of the ball from vi =…

A: Given, mass of soccer ball , m = 0.44 kg  initial velocity,vi = 8.3m/sx^+(-2.3m/s)y^final…

Q: A 0.149 kg baseball, thrown with a speed of 39.5 m/s, is hit straight back at the pitcher with a…

A: (a)According to the impulse-momentum theorem, the impulse delivered to the baseball must be equal to…

Q: A ball of mass 0.150 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to…

A:

Q: Two ice skaters, 50-kg and 60-kg respectively, moving together at a speed of 2.0 m/s push off…

A: Two ice skaters(A and B) are facing each other, initially they are moving towards each other at a…

Q: A 0.150-kg baseball, thrown with a speed of 40.0 m/s, is hit straight back at the pitcher with a…

A: Given data:  Mass of baseball (m) = 0.150 kg Initial velocity (Vi) = - 40.0 m/s Final velocity (Vf)…

Q: Two rams are fighting and run straight at each other. Ram 1 has m1 = 115 kg and an initial velocity…

A: Collisions are of two types, they are elastic and inelastic collision. Collisions in which both…

Q: A 1.8 kg ball drops vertically onto a floor, hitting with a speed of 34 m/s. It rebounds with an…

A: Mass of the ball m=1.8 kg, initial velocity of the ball u=34 m/s, velocity of the ball after…

Q: In the overhead view of the figure, a 480 g ball with a speed v of 8.6 m/s strikes a wall at an…

A: (a)  J →= Δp→Δp→ = m(v→f-v→i)Here, v→i = +8.22i^-2.5j^v→f = +8.22i^+2.5j^J →= (0.48kg x 5…

Q: A 0.550 kg ball falls directly down onto concrete, hitting it with a speed of 12.0 m/s and…

A:

Q: The three balls in the overhead view of the figure are identical. Balls 2 and 3 touch each other and…

A: Consider the given data as below. Initial velocity of ball 1, vo=7.31 ms The masses of all balls are…

Q: The figure shows a 0.3 kg baseball just before and just after it collides with a bat. Just before,…

A:

Q: Q7/ A ball of mass 0.4 kg is thrown against a brick wall. When it strikes the wall it is moving…

A: Impulse is a short period force causing an object to move or send it into motion. Variables known,…

Q: In the overhead view of the figure, a 410 g ball with a speed v of 3.2 m/s strikes a wall at an…

A:

Q: Alexis bounced a 0.550 kg rubber ball on the floor. The ball's speed just before hitting the floor…

A:

Q: Two rams are fighting and run straight at each other. Ram 1 has m1 = 115 kg and an initial velocity…

A:

Q: A 1200g ball drops vertically and hits the floor with a speed of 25 m/s. It bounces back to the air…

A:

Q: A 1.8 kg ball drops vertically onto a floor, hitting with a speed of 34 m/s. It rebounds with an…

A: Given, mass of the ball, m = 1.8 kg speed of the ball, v = 34 ms final speed, vf = 12 ms

Q: A soccer ball with a mass of 0.427 kg approaches a player horizontally with a speed of 14.0 m/s. The…

A: Given data:  Mass (m) = 0.427 kg Initial speed = 14.0 m/s, towards player Final speed = 22.3 m/s, in…

Q: A 0.10-kilogram model rocket's engine is designed to deliver an impulse of 9.0 newton-seconds. If…

A: Here given a 0.10-kilogram model rocket's engine is designed todeliver an impulse of 9.0 N.s. The…

Q: In the overhead view of the figure, a 460 g ball with a speed v of 4.5 m/s strikes a wall at an…

A: Find the impulse acting on the ball and average force exerted on the ball.

Q: A golf ball of mass 0.045 kgkg is hit off the tee at a speed of 32 m/sm/s . The golf club was in…

A:

Q: A professional golfer is examining a video of a practice swing. The high‑speed footage shows that…

A:

Q: n a crash test, a car of mass 1500 ?? collides with a wall and rebounds as in the figure. The…

A: Impulse acting on an object is equal to the change in momentum of the object. It is given by the…

Q: In a dance jump, the dancer lifts their center of mass 40 cm.  When they land, they bend their knees…

A:

Q: A pitcher throws a 0.145 kg baseball with a speed of 38.0 m/s. The ball is hit straight back at the…

A: Given data :               Mass of the baseball, m = 0.145 kg               Initial speed of the…

Q: A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a vertical wall.…

A:

Q: A 35.8 kg box of books is dropped on the floor from a height of 1.3 m and comes to rest. What…

A:

Q: a 5.0 oz baseball arrives at the bat with a speed of 160 ft/s. it remains in contact with the bat of…

A: The speed =160ft/s To find the bat impact to the ball and the force exerted by the bat and the ball

Q: A professional golfer is examining a video of a practice swing. The high‑speed footage shows that…

A: Given that:- Mass of ball=m=45.9 gm

Q: A member of the volleyball team spikes the ball. During this process, she changes the velocity of…

A: