Question

don a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 2 s, how long i A) 586 mB) 293 m C) 1130 m D) 147 m 2) Two children fighting over a toy pull on the toy in different directions. One child pulls to the north with a force of 5.3 N, and the other child pulls to the east with a force of 6.3 N. What is the magnitude of the net force on the toy? A) 1.0N B) 12N C)8.2N D) 9.3 N 3) In a collision between a huge SUV and a small compact car, the SUV exerts a larger force on the compact than the compact exerts on the SUV. True False 4) If the rockets of a spaceship in outer space (far from all gravity) suddenly lose power and go off, the spaceship will gradually slow to a stop. True False 5) A stalled car is being pushed up a hill by three people, The net force on the car is A) zero. B) in the same direction of the cars motion. C) in the opposite direction of the car's motion. D) None of the above and it is moving at a constant speed 6) A dog is standing in the tail bed of a pickup truck. The tail bed is coated with ice, causing the force of friction between the dog and the truck to be zero. The truck is initially at rest, and then accelerates to the right, moving along a flat road. As seen from a stationary observer (watching the truck move to the right), the dog A) does not move left or right, but simply slides toward the back of the truck. B) moves to the right, but not as quickly as the truck is moving to the right, causing it to slide toward the back of the truck C) moves to the right at the same rate as the truck, so it doesn't slide. D) moves to the left, as the truck moves to the right, causing the dog to slide toward the back of the truck. 7) Two bodies P and Q on a perfectly smooth horizontal surface are connected by a light cord. is applied to Q as shown in the The mass of P is greater than that of Q. A horizontal force figure, accelerating the bodies to the right. F The magnitude of the force exerted by the connecting cord on body P will be A) zero. B) less than F but not zero C) equal to F D) greater than F

Answer 1