· (b) A body at rest is given an initial uniform acceleration of 8.0m/s2 for 30 secs after which the acceleration is reduced to 5 m/s2 for the next 20s. The body maintains the speed attained for 60 secs after which it is brought to rest in 20 secs. Draw the velocity-time graph of the motion using the information given above.

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size

Why do different substances have diffrent properties