A person driving a car at 15 m/s realizes they are late for work and presses the gas pedal for 3 seconds until they are moving at 21 m/s. What is the acceleration of the car?

Liquid rising in a thermometer as temperature increases and it is an example of

Amy walks 3 m from her desk to the teacher's desk. From the teacher's desk, she then walks 4 m in the opposite direction to the classroom door. Which table correctly represents both the distance and displacement of Amy's motion?

What are three disadvantages of making and using plastic? It pollutes the land and water. It requires cutting down trees for raw materials. It takes an incredibly long time to break down. It freely conducts heat and electricity.

An ephemeral stream gets most of its water from a oceans b other streams c rain d floods

Why does the magnet rotate in an AC motor?

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A transparent film laminated to a fabric is identified in the study material as a. stretch fabric. b. PVC. c. a skin. d. two-faced fabric

Technician A says that all friction and steel plates in a clutch pack should be replaced during and overhaul. Technician B says that the automatic transmission fluid cooler should always be flushed when a unit is rebuilt or replaced.

Cold water (cp = 4180 J/kg·K) leading to a shower enters a thinwalled double-pipe counterflow heat exchanger at 15°C at a rate of 1.25 kg/s and is heated to 60°C by hot water (cp = 4190 J/kg·K) that enters at 100°C at a rate of 4 kg/s.

Determine the magnitude of the acceleration for the speeding up phase.