what is asteroid?

When the first asteroid named Ceres was discovered?

Who had coined the term asteroid?

An asteroid was fast approaching the earth. Scientists fired a rocket which hit the asteroid at a distance of 5 R from the centre of the earth (R = radius of the earth). mmediately after the hit the asteroid’s velocity (V_(0)) was making an angle of theta=30^(@) with the line joining the centre of the earth to the asteroid. The asteroid just grazed past the surface of the earth. Find V_(0) [Mass of the earth = M]

Who discovered first asteroid, 1 Ceres?

Three astronauts, propelled by jet backpacks, push and guide a 120 kg asteroid toward a processing dock, exerting the forces shown in Fig. 5-37, with F_(1)=32N,F_(2)=55N,F_(3)=41N, theta_(1)=30^(@) , and theta_(3)=60^(@) . What is the asteroid's acceleration (a) in unit-vector notation and as (b) a magnitude and (c) a direction relation relative to the positive direction of the x axis ?