A car starts from the rest and travels for 5.0 s with a constant acceleration of -1.5 m/ s2 . What is the final velocity of the car? How far does the car travel in this time interval?

think its the third option

the answer is b, have negligible mass

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

d. platinum would have the greatest temperature increase because it has the lowest specific heat.