PHYSICS QUESTIONS & ANSWERS

PHYSICS QUESTIONS & ANSWERS -4.3 km - CORRECT ANSWER- A jogger runs 5.0 km on a straight trail at an angle of 60° south of west. What is the southern component of the run rounded to the nearest tenth of a kilometer? -9.8 m/s2 - CORRECT ANSWER- In the formula vy = ayt, what is the value of ay for an object in projectile motion? 1.3 m/s - CORRECT ANSWER- A wrecking ball has a mass of 650 kg. It swings from a cable that is 21 m long. The centripetal force on the ball is 56 N. What is the tangential speed of the wrecking ball? 10 - CORRECT ANSWER- The diagram shows three different bicycle routes taken by Frank, Alexis, and Juan to get to the electronics store. According to the diagram, Juan traveled _____ kilometers. 11 - CORRECT ANSWER- While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is 16 km/h - CORRECT ANSWER- Ingrid is participating in a relay race. While jogging at 9 km/h, she tosses a relay stick at 16 km/h to her teammate, who is standing still. How fast is the relay stick moving relative to Ingrid? 21.7 m/s - CORRECT ANSWER- Lexy throws a dart with an initial velocity of 25 m/s at an angle of 60° relative to the ground. What is the approximate vertical component of the initial velocity? 216 m - CORRECT ANSWER- A truck heading east has an initial velocity of 6 m/s. It accelerates at 2 m/s2 for 12 seconds. What distance does the truck travel in the given time? 23 kg - CORRECT ANSWER- A child on a spinning playground ride is 0.36 m from the center of the ride. The centripetal force on the child is 19 N. What is the mass of the child if the child has a tangential speed of 0.54 m/s? 23 N - CORRECT ANSWER- A ball that has a mass of 0.25 kg spins in a circle at the end of a 1.6 m rope. The ball moves at a tangential speed of 12.2 m/s.