Please help! Calculate the speed for each situation. In your answers include the proper units. A doctor ran 100 meters in 20 seconds.

A duck slowly waddled 20 feet in 2 minutes.

Some dude flew 100 miles in 2 hours.

Dave rolled down a hill. He rolled 300 meters 30 seconds.

What is the length x of the side of the triangle below? (hint: use the cosine function)

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.

Will give brainliest! which statement best describes the similarities between fundamental forces? electromagnetic and strong nuclear forces influence the interaction between charged particles within an atom. gravitational and magnetic forces are both types of charges that occur in nature. nuclear and magnetic forces are both related to mass and weight. strong nuclear force is most like electrical force because they are both related to distance.