Variable Acceleratio

[deep robin]

hi could someone help pls?

[stone shard]

I need help too

Part a

[verbal imp]

For part a just set t=6 into the first function at 0<=t<=6 .The velocity at 6 seconds will also be the value of c as both functions include 6seconds

Part b set 2 simultaneous equations as they gave you v=4 at t=12 and and t=10s v=c and v=at+b will have the same velocity.Use this to find a and b

To describe its motion mention its Acceleration whether it is positive or negative and notice the gradient of v=at+b as a is constant so the acceleration is also constant

c is just sketching a quadratic but you stop at t=6

[deep robin]

ocr mei