A person walks 5.0kilometers north, then 5.0 kilometers east. His displacement is closest to? A. 10 kilometers northwest B. 7.1 kilometers northwest C. 10 kilometers northeast D. 7.1 kilometers northeast

The position of an object as a function of time is given by [x (t) = at^3 - bt^2 + ct - d] where (a = 3.6, b = 4.0, c = 60 m, and d = 7.0). (a) Find the instantaneous acceleration at t = 2.4 s. (b) Find the average acceleration over the first 2.4

Which has more kinetic energy, a real car moving at 5 mph or a real car moving at 35mph? How do you know? (explain your reasoning mathematically or logically)

A 3.5 kg object has a momentum of 26 kg-m/s. Calculate the speed of the object.

12. Two ice skaters are initially at rest. The 78.2 kg male ice skater pushes his 48.5 kg female partner forward and away from his body with a velocity of 8.46 m/s. What is the male skater's velocity as a result of the push

A displacement is related to time as x = A sin (2? ft), where A and f are constants. Find the dimensions of A. [Hint: A trigonometric function appearing in an equation must be dimensionless.] A. L * T B. L / T C. L D. T / L E. T

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.