A car starts from rest and accelerates uniformly for 20s to attain speed of 25ms. It maintains this speed for 30s before decelerating uniformly to rest.
The total time for the journey is 60s.
a. Sketch a velocity-time graph for the motion
b. Use the graph to determine the
c. Total distance travelled by the car,
d. Deceleration of the car.

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Whic new weapon increased the importance of footsoldiers during the hundred years’ war?

For each of the following, mark whether it is a possible confounder (a factor that mixes up the results, making it look like candy is to blame when it's a causal (or causation) link which supports the argument that candy causes criminal behavior (ie, explains how candy leads to criminality ), or neither (an irrelevant factor, something that may cause people to become criminals but has nothing to do with eating candy). choose your answers based only< on the information given. additives in candy- additives found in candy may adversely affect brain development of young children in ways that could contribute towards adult aggression. impulsive personality-- kids who are highly impulsive and have trouble delaying gratification are more likely to eat candy every day as children and more likely to disobey laws as adults. violent abuse-- children who suffer violent abuse are more likely to become violent adults and commit violent crimes. gender- boys are overwhelmingly more likely to commit violent crimes

Why do drivers have difficulty seeing side traffic at t-intersections in rural areas?