Physics 1, Questions & Answers

Physics 1, Questions & Answers A ball starting from rest at the top of an inclined plane gains a speed of 2 m/s for each second it rolls. What is its acceleration down the incline? 0.5 m/s2 1 m/s2 2 m/s2 4 m/s2 - ANSWER: 2 m/s2 A block pulled to the left with 15 N and to the right with 5 N at the same time experiences a net force of 5 N. 10 N. 15 N. 20 N. - ANSWER: 10 N. A car's speed 3 seconds after accelerating from rest at 2 m/s2is 2 m/s. 3 m/s. 4 m/s. 6 m/s. - ANSWER: 6 m/s. A cart changes its speed from 90 m/s to 100 m/s in 10 seconds. During this interval its acceleration is zero. 1 m/s2. 10 m/s2. none of the above - ANSWER: 1 m/s2. A cart maintains a constant velocity of 100 m/s for 10 seconds. During this interval its acceleration is zero. 1 m/s2 10 m/s2. none of the above - ANSWER: zero. A force is a vector quantity because it has both