Billy is racing his 2,500 lb truck going 72 mph east against Tom who is in his mustang going 81 mph east. How many miles per hour is Billy going? How many miles per hour is Tom going? ​

Awheelhas a radius of 4.8 m. howfar (path length) does a point on the circumference travel if thewheel is rotated through angles of 30°, 30 rad, and 30 rev, respectively?

Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.

Why should the wavelength scale of spectroscope be calibrated