Answer:
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).
Explanation:
Answer:
Explanation:
We are given that
Mass of box=60kg
Net external force applied on the box=90 N
Friction force =30N
We have to find the acceleration of the box.
We know that
Net external force=ma
Substitute the values then we get
Hence, option b is true.
Answer:
Iron is a element
Explanation:
a substance that cannot be broken down into simpler substances by chemical means, and is characterized by its atomic number, , which represents the number of positively charged particles within that element's nucleus
Answer:
Explanation: what grade are u in?