Question

The most appropriate unit for expressing the speed of a space rocket is *
1 pointQ4.The clocks and watches which are used for measuring time are based on: *
1 point​

Answer 1

Following are the answers to the above questions:

Explanation:

• The most appropriate unit for expressing the speed of a space rocket is  knots.

• One knot is assumed to be one nautical mile per hour.

• One nautical mile is equal to 6076 feet and an hour is equal to 3600s.

• The clocks and watches which are used for measuring time are based on periodic motion. The principle of oscillation is used for making clocks or watches.