12. At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizon- tal or x component of the ball's acceleration is 810 m/s² and the vertical or y component of its acceleration is 1100 m/s². The ball's mass is 0.43 kg. What is the magnitude of the net force acting on the soccer ball at this instant?

12. At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizon- tal or x component of the ball's acceleration is 810 m/s² and the vertical or y component of its acceleration is 1100 m/s². The ball's mass is 0.43 kg. What is the magnitude of the net force acting on the soccer ball at this instant?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 14.30P: The United States possesses the ten largest warships in the world, aircraft carriers of the Nimitz...

See similar textbooks

Similar questions

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 2.7-kg projectile from rest to a speed of 8.3 x 10³ m/s. The net force accelerating the projectile is 4.9 x 105 N. How much time is required for the projectile to come up to speed? i 189.8 Units S
A 9.50 kg object has the given x and y acceleration components. a, = (0.9) + m 0.39- s2 (0.73). a, = (11.7) - (091). t What is the magnitude Fnet of the net force acting on the object at time t = 6.87 s? N Fnet What is the angle 0 of the net force at this same time? Give your answer as a number of degrees counter-clockwise from the +x-аxis.
5. A 40 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 15 m apart but connected by a rope of negligible mass. The girl exerts a horizontal 5.2 N force on the rope.What are the acceleration magnitudes of (a) the sled and (b) the girl? (c) How far from the girl's initial position do they meet?
2. A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, taken as the xy plane. The 4.00-kg puck has a velocity of 3.00 î m/s at one instant. Eight seconds later, its velocity is 8.00 î+ 10.00 ĵ m/s. Assuming the rocket engine exerts a constant horizontal force, find (a) the components of the force and (b) its magnitude.
A rocket sled decelerates at a rate of a =197 m/s^2. Its passenger has a mass of 73.5 kg. a. Calculate the horizontal component of the force the seat exerts against his body. b. Compare his weight by using a ratio. The horizontal component of the forice is how many times his weight. Calculate the magniture and direction of the total force the seat exerts against his body.
3.Boxes A and B are incontact on a horizontal, frictionlesssurface (shown below). Box A hasmass 20.0 kg and box B has mass 5.0 kg. A horizontal force of 250 Nis exerted on box A. What is themagnitude of the force that box Aexerts on box B?
A space traveller weighs herself on Earth at a location where the acceleration due to gravity is 9.82 m/s29.82 m/s2 and finds a value of 553 N.553 N. What is her mass ??
A 2500 kg van accelerates down an icy driveway, going from rest to 30.0 m/s in 6.00 s. During its motion, a 0.100 kg stuffed toy hangs by a cord from the van’s ceiling. The van’s acceleration is such that the cord remains perpendicular to the ceiling. Determine the: a) angle ?; and the b) tension in the cord.
A 2500 kg van accelerates down an icy driveway, going from rest to 30.0 m/s in 6.00 s. During its motion, a 0.100 kg stuffed toy hangs by a cord from the van’s ceiling. The van’s acceleration is such that the cord remains perpendicular to the ceiling. Determine the: a) angle ?; and the b) tension in the cord.
7. A 60.0 kg astronaut is freely floating in space and pushes on a freely floating 120.0 kg spacecraft with a force of 30.0 N for 1.50 s. What is the velocity of the spacecraft? So aili to igior orh ai tadW (d)
Two masses m1=5 Kg and m2=12 Kg are connected with string and pulled with a force F=25 N that makes an angle of 53° with a smooth horizontal surface as shown in the figure. Find the tension in the string in a unit of Newton. F A. 6.258 B. 8.85 m2 m1 0 C. 2213 D. None E. 4.425
On 24 November 2021 the DART (Double Asteroid Redirection Test) spacecraft was launched. Its mission is to assess the ability of an impact to deflect the path of an asteroid. DART was launched on a Falcon 9 rocket. At launch a Falcon rocket has a mass of 555 000 kg and generates a force of 7.6 x 106 N. A. Neglecting the effect of gravity, what is the initial acceleration of the rocket? Give your answer to an appropriate number of significant figures. B. Assuming that the initial acceleration remains constant, how fast will the rocket be moving after 2 seconds? C. In practice, as the rocket burns fuel, its mass decreases. Assuming the thrust remains the same, how would your answer to part (ii) change? Would the speed after 2 seconds be lower, the same or higher?