Two forces are applied to a 2.0 kg block on a frictionless, horizontal surface. F, = 2.0 N F2 = 8.0 N 2.0 kg Frictionless Surface What is the acceleration of the block? What is the magnitude of the net force acting on a 2.0 x 10 kg car as it accelerates from rest to a speed of 15 m/s in 5.0 seconds? A man weighs 900 newtons standing on a scale in a stationary elevator. If some time later the reading on the scale is 1200 newtons, describe the motion and direction of the elevator. 5. A net force F causes mass mj to accelerate at rate a. A net force of 3F causes mass m2 to accelerate at rate 2a. What is the ratio of mass m, to mass m2? A 0.60 kg softball initially at rest is hit with a bat. The ball is in contact with the bat for 0.20 second and leaves the bat with a speed of 25 m/s. What is the magnitude of the average force exerted by the ball on the bat? A 1.2 x 10° kg car is accelerated uniformly from 10 m/s to 20 m/s in 5.0 seconds. What is the magnitude of the net force acting on the car during this 6. 7. 8. 10 4. 3.
Two forces are applied to a 2.0 kg block on a frictionless, horizontal surface. F, = 2.0 N F2 = 8.0 N 2.0 kg Frictionless Surface What is the acceleration of the block? What is the magnitude of the net force acting on a 2.0 x 10 kg car as it accelerates from rest to a speed of 15 m/s in 5.0 seconds? A man weighs 900 newtons standing on a scale in a stationary elevator. If some time later the reading on the scale is 1200 newtons, describe the motion and direction of the elevator. 5. A net force F causes mass mj to accelerate at rate a. A net force of 3F causes mass m2 to accelerate at rate 2a. What is the ratio of mass m, to mass m2? A 0.60 kg softball initially at rest is hit with a bat. The ball is in contact with the bat for 0.20 second and leaves the bat with a speed of 25 m/s. What is the magnitude of the average force exerted by the ball on the bat? A 1.2 x 10° kg car is accelerated uniformly from 10 m/s to 20 m/s in 5.0 seconds. What is the magnitude of the net force acting on the car during this 6. 7. 8. 10 4. 3.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter7: Gravity
Section: Chapter Questions
Problem 45PQ: Figure P7.45 shows a picture of American astronaut Clay Anderson experiencing weightlessness on...
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