Podcast
Questions and Answers
A baseball is thrown at an angle of 30 degrees from level ground with an initial velocity of 100 m/s. How far will the baseball travel horizontally before it returns to the same level?
A baseball is thrown at an angle of 30 degrees from level ground with an initial velocity of 100 m/s. How far will the baseball travel horizontally before it returns to the same level?
- 883 m (correct)
- 983 m
- 950 m
- 850 m
A golf ball is driven horizontally from an elevated tee at 80 ft/sec. If it strikes the fairway 2.5 seconds later, what is the magnitude of the ball's resultant velocity just before it hits the ground?
A golf ball is driven horizontally from an elevated tee at 80 ft/sec. If it strikes the fairway 2.5 seconds later, what is the magnitude of the ball's resultant velocity just before it hits the ground?
- 100 ft/sec
- 90 ft/sec
- 113 ft/sec
- 115 ft/sec (correct)
A ball is whirled in a horizontal circle of radius 1.5 ft, completing one revolution every 2 seconds. What is the ball's centripetal acceleration?
A ball is whirled in a horizontal circle of radius 1.5 ft, completing one revolution every 2 seconds. What is the ball's centripetal acceleration?
- 14.7 ft/sec² (correct)
- 1.33 ft/sec²
- 17.4 ft/sec²
- 3.13 ft/sec²
A simple pendulum 150.3 cm long makes 100 vibrations in 246.7 seconds. What is the acceleration due to gravity at that location?
A simple pendulum 150.3 cm long makes 100 vibrations in 246.7 seconds. What is the acceleration due to gravity at that location?
A plumb-bob on a 38-inch cord has a period of 2 seconds on Earth. An identical experiment on the moon, where gravity is 1/6th of Earth, will have what observed period?
A plumb-bob on a 38-inch cord has a period of 2 seconds on Earth. An identical experiment on the moon, where gravity is 1/6th of Earth, will have what observed period?
What is the length of a simple pendulum, in meters, if its period is 2 seconds?
What is the length of a simple pendulum, in meters, if its period is 2 seconds?
An empty truck of 2000 kg has a maximum acceleration of 1 m/sec². What is its maximum acceleration when carrying a 1 metric ton (1000 kg) load?
An empty truck of 2000 kg has a maximum acceleration of 1 m/sec². What is its maximum acceleration when carrying a 1 metric ton (1000 kg) load?
An elevator weighing 3200 lbs is rising with an upward acceleration of 4 ft/sec². What is the tension in the supporting cable?
An elevator weighing 3200 lbs is rising with an upward acceleration of 4 ft/sec². What is the tension in the supporting cable?
An elevator moves 2 m in the first 0.6 seconds with constant upward acceleration starting from rest. A 3 kg package is held by a vertical string. What tension does the string exert during the acceleration?
An elevator moves 2 m in the first 0.6 seconds with constant upward acceleration starting from rest. A 3 kg package is held by a vertical string. What tension does the string exert during the acceleration?
A 3 lb weight is attached to a spring with a spring constant of 25 lb/ft. If displaced slightly and released, what frequency will the weight vibrate at?
A 3 lb weight is attached to a spring with a spring constant of 25 lb/ft. If displaced slightly and released, what frequency will the weight vibrate at?
Flashcards
Range of a projectile
Range of a projectile
The horizontal distance traveled by a projectile before it returns to its original height.
Time of flight
Time of flight
The time it takes for a projectile to complete its trajectory and return to its initial height.
Centripetal acceleration
Centripetal acceleration
The acceleration that acts on an object moving in a circular path, directed towards the center of the circle.
Period of a pendulum
Period of a pendulum
Signup and view all the flashcards
Period of a spring-mass system
Period of a spring-mass system
Signup and view all the flashcards
Spring constant
Spring constant
Signup and view all the flashcards
Drag force
Drag force
Signup and view all the flashcards
Net force
Net force
Signup and view all the flashcards
Acceleration
Acceleration
Signup and view all the flashcards
Mass
Mass
Signup and view all the flashcards