At low speeds; no.
At high speeds; yes.
For many vehicles that transition begins at about 33 mph,
and becomes significant at speeds above 60 mph.
Top speed - No, Acceleration - yes top speed is all about areodynamics (frontal area, Cd "coefficient of drag"), horsepower and gearing. Acceleration is all about power to weight and traction upto about 100mph, above 100mph the areodynamics starts playing a more important roll.
The more weight the car has the slower it goes.
the fatter you are, the less speed your car will max out at, but, the more weight, the more momentum
Yes. A heavier rocket will need more energy to achieve a certain speed.
That depends on the situation. But more massive and heavy objects are typically more difficult to move around quickly.
it doesnt directly, but it affects handling which in turn effects speed. the bigger the boat the more slower it goes oppossite with small boat
it doesnt directly, but it affects handling which in turn effects speed. the bigger the boat the more slower it goes oppossite with small boat
A heavy vehicle can go just as fast as a light vehicle, it just takes longer and more HP to reach desired speed with a heavier vehicle.
A lot! 10 kg more can make you 1 second slower per lap!
The more weight the engine has to move, the harder it works, and the more fuel it uses.
Yes your weight will affect your speed. Due to higher force of friction, if you weigh more you will thus move slower. However, if your weight is due primarily to muscle, your extra muscle mass could compensate, or even over compensate for your weight, thus making you faster. If your weight is mostly due to fat or unnecessary baggage, that would certainly weigh you down. For example on a crew team, each member of the boat is responsible for pulling their own weight. If somebody weighs a lot and is going to slow down the boat, they better have more muscle and pull faster in order to compensate! you need less to pull so the more you weight the slower you go
The higher the speed the more the kinetic energy.