A sprinter is running at the end of a race and begins to tire. Her velocity is 8.55 m/s and has negative acceleration at -0. 1 m/s2 for the last 80 meters. What is her velocity when she ends the race?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope

50 points to who answers this question in a clear and simple explanation : to what hight will a mass of weight of 500 n be raised in 20 seconds by a motor using 4kw of power?