15. An object is moving along a straight line. The graph shows the velocity of the object over time https://tcan4424-oakcliff-ccl.gradpoint.com/Resour...What is the instantaneous acceleration of the object at time = 6 seconds?
a = dv/dt = t-4
at t =6
a =6-4 = 2 m/s^2
16. 2ax = v^2-v0^2 = v^2 = (199 km/h)^2
a = 1/2 * 199^2 (km^2/h)^2/(2km)
=9000.25 *1000/3600^2 = 0.7639 m/s^2
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