Mineral is commonly used as an abrasive?

Abanked road comer of radius 146 m is to be constructed. if the comer is designed for vehicles moving with a speed of 20.0 m/s, what should the banking angle be, in units of degrees?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost