1. A toy alligator is placed at the top of a 2-meter-long frictionless ramp. It is released from rest and reaches the bo
Posted: Mon Jul 18, 2022 5:44 am
1. A toy alligator is placed at the top of a 2-meter-longfrictionless ramp. It is released from rest and reaches the bottomof the ramp in 3s. What is the angle of incline of the ramp?
Answer: 87.4 degrees
2. An astronaut throws a rock straight up from a cliff on anewly discovered planet. The height of the cliff is 12.16 m. Therock is thrown with an initial velocity of 8.2 m/s and hits theground below the cliff 2.65 seconds later. What is the height ofthe rock, measured relative to the cliff top, at its highest point?(Note: Because the astronaut is not on Earth, the accelerationin the y-direction is not equal to -g.)
Answer: 3.48 m
3. A cheerleader is thrown straight up from the groundwith an initial velocity of 1.5 m/s. On the way down, she makes eyecontact with a fan when she is 2.8m above the field. How much timepasses between the initial throw and when they make eyecontact?
Answer: 1.05 s
I HAVE PROVIDED THE CORRECT ANSWERS BUT I DONT UNDERSTAND THEM.PLEASE SHOW FULL WORK OF HOW YOU GET TO THE ANSWER. THANK YOU!
Answer: 87.4 degrees
2. An astronaut throws a rock straight up from a cliff on anewly discovered planet. The height of the cliff is 12.16 m. Therock is thrown with an initial velocity of 8.2 m/s and hits theground below the cliff 2.65 seconds later. What is the height ofthe rock, measured relative to the cliff top, at its highest point?(Note: Because the astronaut is not on Earth, the accelerationin the y-direction is not equal to -g.)
Answer: 3.48 m
3. A cheerleader is thrown straight up from the groundwith an initial velocity of 1.5 m/s. On the way down, she makes eyecontact with a fan when she is 2.8m above the field. How much timepasses between the initial throw and when they make eyecontact?
Answer: 1.05 s
I HAVE PROVIDED THE CORRECT ANSWERS BUT I DONT UNDERSTAND THEM.PLEASE SHOW FULL WORK OF HOW YOU GET TO THE ANSWER. THANK YOU!