15. Assertion : Velocity is the speed of an object in a particular direction. Reason: SI unit of velocity is same as speed.​

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of