A 40 N force is applied to a 10 kg block, but the object only accelerates at 2 m/s^2. What is the net force acting on the block? Use a free body diagram to explain your answer.

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 is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?

When using the scientist method, which step comes last?