8 A car accelerates at a rate of 10m/s for a time of 4s and it reaches a speed of 52m/s . calculate the initial value
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State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon