Which of the following is contained in a pull start lawnmower?

a pulley and a wheel and axle

a wheel and axle and an inclined plane

a pulley and a wedge

a wheel and axle and a block and tackle

A track coach with a meter stick and a stopwatch is trying to determine if a student is walking with constant speed. he should ...

The acceleration of the gravity Moon is equal to one-sixth of Earth's gravitational acceleration times. if an astronaut has a mass of 60 kg, what is the mass ande weight of the astronauts on the moon?

An ice block measuring 5cm by 5cm by 5cm has a desity of 5g/cm3. What is the mass of the ice block?

A children's roller coaster is released from the top of a track. If it's maximum speed at ground level is 8 m/s, find the height it was released from

An electron and a proton have the same kinetic energy and are moving at speeds much less than the speed of light. Determine the ratio of the de Broglie wavelength of the electron to that of the proton.

What type of ethic is life-centered and views humans as just one component life on Earth

Which formula describes acceleration? m/s^2 m/s s/m m2

An arrow is shot upward on mars from ground level with a velocity of 60 meters per second. Its height (in meters) after t seconds is given by 2 s (t) = 60t - 1.9t^2.

Energy transformations in a bouncy house

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?