Well, since your question is so vague as to the type of car, type of transmission, I can only speculate you are having some sort of a transmission problem. If it is a automatic more than likely it will have to be completely removed and rebuilt or replaced with a working unit. Automatics have disc in them that rub together to transfer the power from the engine to the differential. Typically they wear out, sooner without having the Transmission Fluid regularly. If it is a manual, it is cheaper and easier to repair. There is a good chance that it just needs a new clutch disc and maybe pressure plate and throw-out bearing. They are much cheaper and easier to replace as typically the transmission does not have to be completely removed from the vehicle, and can be done by the owner with moderate to strong handyman abilities.
Drive shaft is going out
It could be your motor mounts (usually always slightly vibrating the car, especially when accelerating) or most likely not aligned/damaged driveshaft on rear wheel drive vehicles.
if its front wheel drive its the C V joints in the axles
if its bogging down it could be catalic converter
noise and jolting is present whilst car is idolling and accelerating
Frame of reference is the measurement or observation that tells you that a car is accelerating. It uses the second law of motion to tell you rather or not the car is accelerating.
The car is accelerating quickly as it speeds down the highway.
Frame of reference is the measurement or observation that tells you that a car is accelerating. It uses the second law of motion to tell you rather or not the car is accelerating.
your car might be weak on accelerating because it isn't firing on all cylinders.
The front tires move when you accelerate a front-wheel drive car, while the rear tires move when you accelerate a rear-wheel drive car. All-wheel drive cars have power going to all four tires when accelerating.
braking
Kinda need more information. Is it just when accelerating, or also when idling in drive? Does it only do it at a certain rpm or speed, or when applying brakes?