1.which of the following is an example of a second-class lever?

wheelbarrow
broom
crowbar
shovel

2.which of the following is an example of a first-class lever?

rake
nut cracker
seesaw
elbow joint

What is the measurement of how fast an object moves relative to a reference point?

Asatellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. if a geosynchronoussatellite is in an equatorial orbit, its position appearsstationary with respect to a ground station, and it is known as ageostationary satellite find the radius rof the orbit of a geosynchronous satellite that circles the earth.(note that ris measured from the center of the earth, not the surface.) you mayuse the following constants: the universal gravitational constant g is 6.67 \times 10^{-11}\; {\rm n \; m^2 / kg^2}. the mass of the earth is 5.98 \times 10^{24}\; {\rm kg}. the radius of the earth is 6.38 \times 10^{6}\; {\rm m}.

If you divide a speed in miles per minute by 60, you get the same speed expressed in miles