@ tcdsb.elearningontario.ca =] [ e PROBLEM SET 5.1/5.2 Submit completed work at least 15 min before the start of next class Work each of the following problems. SHOW ALL WORK. 1. A 25 N force pushes a block across a surface for 6 m. How much work is done by the applied force? 2. If, in the previous question, there is a 15 N kinetic frictional force opposing the motion, how much work is done by the force of friction? Does friction do positive work or negative work on the block? Draw a free-body diagram to support your answer. 3. Does it require more work to raise a 15 kg block by 4 m or to raise a 20 kg block by 2 m, if both are moving at a constant velocity? Draw a free-body diagram to help solve the problem. @ tcdsb.elearningontario.ca [beL] https:/ftcdsb.elearningo: 4. A2Kg toy car moves at a speed of 5 m/s. a. What is the kinetic energy of the car? b. If a child applies a 3 N force for 2 m in the same direction the car is already moving, how much work is done on the car? c. What is the change in the car's kinetic energy from the applied force? d. What is the final kinetic energy of the car? e. What is the velocity of the car after the child applies the 3 N force? @ tcdsb.elearningontario.ca https:/Jtcdsb.elear PROBLEM SET 5.3 Submit completed work at least 15 min before the start of next class Work each of the following problems. SHOW ALL WORK. 1. Avery thoughtful physics student takes her younger sibling to the arcade to play skeeball. She estimates the mass of the skee ball to be about 0.5 kg and the height of the fifty-point ring to be about 1 m above the position from which the ball is released. a. How much gravitational potential energy will the ball have if it hits the fifty-point ring at the highest point? b. How much kinetic energy does the ball need at its release to reach the highest point? c. At what velocity must the ball be released to reach the highest point? d. The student's sibling uses a radar gun to determine how fast she releases the ball, and it is exactly the speed she calculated to reach the 1 m height. However, the ball lands in the thirty-point ring, which is 0.8 m above the release point. How much energy is lost to friction if the ball only reaches 0.8 minstead of 1 m? CHCHIRN @ tcdsb.elearningontario.ca https:/ftcdsb.elearn... 2. The platform height for Olympic divers is 10 m. A 60 kg diver steps off the platform to begin his dive. a. How much gravitational potential energy does the diver have? b. How much kinetic energy does the diver have as he strikes the water? . How much work does the water do on the diver to stop his momentum? d. If the diver stops in 2.5 m after entering the water, what net force is applied to the diver? 3. A4 kg bowling ball begins rolling down a lane at the bowling alley at 6 m/s. When it strikes the pins, it is estimated to be moving at 5 m/s. How much energy is lost due to friction