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- A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?11. A Honda city car is traveling at 54 km/h. If brakes are applied so as to produce uniform retardation of 3m/s². Calculate the time taken by it to stop.? a. 5sec b. 10sec С. 1sec d. None of these1. A proton of mass 1.67 x 10-27 kg is initially at rest. It then moves through 1.80 cm along a straight line, reaching a speed of 3.00 x 106 m/s. During this motion, the net force acting on the proton is A. None of the other answers B. 4.18 x 10-13 N С. C. 1.39 x 10-19 N D. 4.18 x 10-16 N Question 4 of 10 A AMovina to th enovt NUstio n preu ents
- arked out of 00 In the figure shown, two masses being pulled by a force F = 15 N on a horizontal smooth surface. If Flag question the tension in the string connecting the two masses T = 5.0N and m2 = 2 kg. Find the mass m in (kg) a. b. 4 m, c. 1 d. O 1. b O 2.c O 3. d14. What will the spring scale read for a 55kg student in an elevator that moves upward with a constant speed of 6m/s? A. 520N B. 530N C. 540N D. 550NA skier starts from rest at the top of a 30o incline and slides down 100 m to the bottom of the incline. If the coefficient of friction between the incline (snow) and the skier is 0.2, find the speed of the skier when he reaches the bottom of the incline. A.) 25.3 m/s B.) 6.7 m/s C.) 35.4 m/s D.) 16.7 m/s
- QUESTION 13 A 5.0-kg rock is dropped, initially at rest, from a 6.0- m-high second story window. What will be the kinetic eneergy of the rock when it hits the ground below? а. 98 J b. 196 J C. 294 J d. 385 J Ое. 424 JA small engine causes a 0.20-kg model airplane to accelerate at a rate of 12 m/s2 . What is the net force on the model airplane? A. 2.4 N B. 60. kg•m/s C. 2.4 kg•m/s D. 60 N42. John is moving a 14 kg box in a Phsyics lab on an approximately frictionless surface. If the box is initially at rest and zaim applies a force of 15 N for 4.7 s, what would be the speed of the box at the end of the 4.7 period? А. 30 m/s В. 12 m/s C. 2.7m/s D. 1.8 m/s E. 5.0 m/s
- A 10 g bullet leaves the 0.75 m barrel of a gun with 250 m/s speed. The force exerted on the bullet is O a. 375 N O b. 416.67 N O c. 312.5 N O d. 187.5 NA parachutist is falling with speed of 55 m/s when his parachute opens. If the air resistance O a. 25 m/s O b. 50 m/s O c. 40 m/s O d. 30 m/s O e. None wy2 -N, where w is the total weight of the man and parachute, find his speed if t = 10sec. Note:Net force on system = weight of system - air resistance. 251. A crate with a mass 32.5kg initially at rest on a warehouse floor is acted on by a net horizontal force of 140N. a. What acceleration is produced? b. How far does the crate travel in 10.0s? c. What is its speed at the end of 10.0s?
