Mai jogs 800 m north and then turns and jogs 200 m back to the south. What is her velocity if it takes her 400 seconds?

A. 2.5 m/s north

B. 2.5 m/s south

C. 1.5 m/s south

D. 1.5 m/s north

A little girl slid down a playground slide, decreasing her potential energy by 1000 J while increasing her kinetic energy by only 900 J. Why did she lose 100 J of mexhanical energy

Which of the following describes the interaction between two south poles of a magnet? A. attract B. repel C. stay unchanged D. it depends

A particle is located on the x axis 4.9 m from the origin. A force of 38 N, directed 30° above the x axis in the x-y plane, acts on the particle. What is the torque about the origin on the particle? Round your answer to the nearest whole number.

Which of the following elements do living things have that volcanic rocks don't have? A) Oxygen B) Silicon C) Magnesium D) Carbon

Rank from greatest to least the amount of lift on the following airplane wings: (a) area 1000 m2 with atmospheric pressure difference of 2.1N/m2, (b) area 800 m2 with atmospheric pressure difference of 2.

Newton discovered that gravity behaves differently in space than it does on Earth. true or false?

A block of wood loses 160 j of gravitational potential energy as it slides down a ramp. if it has 90 J of kinetic energy at the bottom of the ramp we can conclude that

Explain the difference between strength, muscular endurance and power

You kick a ball with a speed of 18 m/s at an angle of 32 degrees. How far does the hall land?

Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?