Flashcards physics

you pull horizontally on a 75kg crate with a force of 750N and the friction force on it is 250N. calculate the acceleration of the coster

6.7m/s

Newton's First Law

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

a grouping of multiple items interacting and resulting in identical motion

System

a 10 N force and a 30N force act on an object in the same direction, what is the net force on the object

40N

nellie newton holds an apple in her hand, if the action is nellie's hand pushing hte apple up, what is the reaction

the apple pushing nellie's hand down

a graph which the slope is equal to the gravitational field strength(acceleration to gravity)

force-mass graph

a surface force which is always directed perpendicular to the surface

Normal force

a man on an elevator is heading to the top floor while standing on a scale. while the elevator is moving downwards it begins to speed up. the man looks at the scale as the elevator speeds up and realizes that____

The scale force is greater than his weight

if a force of 250N stretches a spring constant 1250N/m, what is the displacement

0.2 m

an object has a mass of 75kg and a weight of 124,5N on the surface of the moon. what is the mass on earth

75kg

the state in which the resultant of all applied forces add to a vector sum of zero

equilibruim

a 20kg box is to be pushed along the floor at constant speed. the coefficient of friction between their surfaces is approximately 0.s75. assuming g=10m/s^2, what is the applied force required to maintain the box's constant speed

75N

if an object has a force of 146.7N and is accelerating at 3.67m/s^2 . what is the mass of that object

40.0kg