You are throwing a ball straight up in the air. at the highest point, the ball’s

a. velocity & acceleration are at zero
b. velocity is nonzero but it’s acceleration in zero
c. acceleration is nonzero, but it’s velocity is zero
d. velocity and acceleration are both nonzero

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

In a good thermo flask the main cause of heat loss is