In deep space (no gravity), the bolt (arrow)
of a crossbow accelerates at 201 m/s2 and
attains a speed of 106 m/s when it leaves the
bow.
For how long is it accelerated?
Answer in units of s.

Which statement best explains why an object weight less on mercury than it does on earth

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

What are atoms of the same element with varying number of neutrons