Acar is stopped at an entrance ramp to a freeway; its driver is preparing to merge. at a certain moment while stopped, this driver observes a platoon of vehicles a distance x0 upstream and initiates the merge maneuver. the platoon approaches the entrance ramp at a constant speed v. the stopped car can accelerate from speed 0 to v at uniform acceleration rate a. find the latest time at which the stopped car can safely start the merge maneuver; i. e., derive an expression for the "latest safe start time" in terms of the variables x0, v and a. assume this latest time enables the platoon to maintain its constant speed and "just touch" the merging car's trajectory. ignore the physical dimensions of the car.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.