An electron has a constant acceleration of + 2.9 m/s2. At a certain instant its velocity is + 8.6 m/s. What is its velocity (a) 2.1 s earlier and (b) 2.1 s later?

Can an object have increasing speed while its acceleration is decreasing? a) No, this impossible because of the way in which acceleration is defined b) No, because if acceleration is decreasing the object will be slowing down c) Yes, an example

How do fungi get food? a They hunt and kill other living things that move. b They make their own food from air, water, and sunlight. c They decompose dead things and absorb the nutrients. d They grow their own food by dispersing seeds.

Which best describes convection? It relies on the collision of particles within or between substances. It occurs in solids, liquids, or gases that are heated. It results when portions of a liquid cool and rise.

Katie and Jon are in the same accounting class, they live in the same wing of their dormitory, and they usually both study at the campus coffeehouse in the morning before class. Over time, Katie and Jon become attracted to each other.

How much force will it take to accelerate a 900-kg car at 6 m/s^2

What are the steps that produce electricity from this fuel

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?