PLEASE ANSWER THESE 2 QUESTIONS FOR BRAINLIEST (no links) 1) on a position time graph, which of the following does the value of the slope indicate about the object?
a. change in position
b. acceleration
c. speed
d. change in direction

2) which statement includes a description of velocity?
a. a marble rolls 30 cm away from the table
b. a student walks 20 m down the street
c. a car travels east at 45 km per hour
d. a bycicle moves 8 m per second

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum. determine the term.