2. a truck speeds up from a velocity of 6 m/s to 14 m/s in 4 seconds. what is the trucks acceleration? show your work 3. a car starts from rest and reaches 15 m/s in 2.5 seconds. what is the acceleration of he car? show your work 4. a resident throws a bag of full trash over the balcony of their third floor apartment. what happened to the distance between the jumper and the bridge in each picture taken? show your work

#2

As it is given here

initial speed is

After 4 seconds the final speed is

so here we can use the formula of acceleration using kinematics

so here it will accelerate at 2 m/s^2 rate.

#3

As it is given here

initial it starts from rest

After 2.5 seconds the final speed is

so here we can use the formula of acceleration using kinematics

so here it will accelerate at 6 m/s^2 rate.

#4

i think question is not correct as in first line it is saying about a bag of trash and then in next line it is asking for the position of Jumper and bridge.

nah.   i'm just sleepy.