A twirler’s baton is 0 point 7 6 m long and spins around its center. The end of the baton has a centripetal acceleration of 47 point 8 m/s squared How long does it take the baton to complete one spin?
A student wants to determine the impulse delivered to the lab cart when it runs into the wall. The student measures the mass of the cart and the velocity of the cart before it hits the wall. What other measurement is necessary to calculate the impulse delivered to the lab cart?
A hot air balloon pilot wants the balloon to quickly rise several feet higher so it will be above some trees in the distance. Which best explains how the pilot can make the balloon rise?
Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40 degrees relative to the ground. What is the approximate horizontal component of the initial velocity?
On an ice skating rink, a girl of mass 50 kilograms stands stationary, face to face with a boy of mass 80 kilograms The children push off of one another, and the boy moves away with a velocity of 3 meters meters per second What is the final velocity of the girl?
The gravitational force between two objects is 1600 N. What will be the gravitational force between the objects if the distance between them doubles?
Which statements describe the motion of a planet according to Kepler’s second law? Choose two correct answers.
A car with a mass of 1 comma 500 kilograms requires a centripetal force of 640 cap n to safely follow a circular curve in the road at 13 point 4 m/s What is the radius of the curve?
Which is an example of conduction?
What is the approximate tangential speed of an object orbiting Earth with a radius of 1 point 8 times 10 to the 8th power m and a period of 2 point 2 times 10 to the 4th power s ?
In which scenario is the greatest amount of work done on a wagon?
A 2 point 5 kilograms block is launched along the ground by a spring with a spring constant of 56 cap n over m The spring is initially compressed 0 point 7 5 m Disregarding friction, how fast will the block move after the spring is released all the way and the block slides away from it?
A car travels straight for 20 miles on a road that is 30 degrees north of east. What is the east component of the car’s displacement to the nearest tenth of a mile?
Which is the best example of kinetic energy?
Briana swings a ball on the end of a rope in a circle. The rope is 1 point 5 m long. The ball completes a full circle every 2 point 2 s What is the tangential speed of the ball?
A car moving south speeds up from 10 meters per second to 40 meters per second in 15 seconds. What is the car’s acceleration?
Describe the shape of liquid water as it is poured into a glass.
If all else stays the same, which change could be made to cause an increase in the gravitational force on a space shuttle?
When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball?
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