Physics Force & Laws Of Motion Level: High School
A newton is the force :a) of gravity on a 1 kg body
b) of gravity on a 1 g body
c) that gives a 1g body an acceleration of 1 cm/s^2
d) that gives a 1 kg body an acceleration of 1m/s^2
e) that gives a 1 kg body an acceleration of 9.8 m/s^2
Physics Force & Laws Of Motion Level: High School
An example of an internal reference frame is :a) any frame that is not accelerating
b) a frame attached to a particle on which no forces act.
c) any frame that is at rest.
d) a frame attached to the centre of the universe.
e) a frame attached to the earth.
Physics Force & Laws Of Motion Level: High School
If you know the impulse that has acted on a body of mass m you can calculate ,a) its initial velocity
b) its final velocity
c) its final momentum
d) the change in its velocity
e) the acceleration during the impulse
Physics Force & Laws Of Motion Level: High School
A car of mass m1 traveling at velocity V passes a car of mass m2 parked at the side of the road . The momentum of the system of the two cars area) 0
b) (m1)*V
c) (m1-m2)*V
d) (m1)*V/(m1+m2)
e) (m1+m2)*V
Physics Force & Laws Of Motion Level: High School
Two boxes , ml = 1.0 kg with a coefficient of kinetic friction of 0.10 , and m2 = 2.0 kg with a coefficient of 0.20 , are placed on a Plane inclined at theta = 30 degrees .(a)what acceleration does each block experience ?
(b) if a taut string is connected to the blocks, with m2 initially farther down the slope , what is the acceleration of each block ?
(c) if the initial configuration is reversed with ml starting lower with a taut string , what is the acceleration of each block ?
Physics Force & Laws Of Motion Level: High School
A 75 kg person stands on a scale in an elevator . What does the scale read ( in N and kg) when the elevator is(a) at rest
(b) ascending at constant speed of 3.0 m/s
(c) falling at 3.0 m/s
(d) accelerating upward at 3.0 m/s2 (s2 means a square)
(e) accelerating downward at 3.0 m/s2 (s2 means a square)
Physics Force & Laws Of Motion Level: High School
A ski slope is 1.2 kilometers long and is inclined at 13 degrees from the horizontal . A person begins at the top of the slope (assumed to be smooth) and accelerates down wards . Find the time it takes for the person to travel to slope .
Physics Force & Laws Of Motion Level: High School
A child is pushing a box of mass 6 kg up a smooth inclined plane which is at an angle 17 degrees to the horizontal . The box is pushed parallel to the plane , and its acceleration is 0.7 m/s2 . Find the force between the plane and the box .
Physics Force & Laws Of Motion Level: High School
A ball of mass 1.6 kilogram is projected with a velocity 19.5 m/s in a direction 30.7 degrees from the horizontal . The acceleration due to gravity is g = 9.81 m/s2 . What is the force acting on the ball the moment it is projected (in Newton's) ?Physics Force & Laws Of Motion Level: High School
A bucket of water which weighs 10.7 Newton's is pulled vertically using two forces . The first of magnitude 8.6 Newton's acts at an angle 59 degrees from the vertical . The second acts at an angle 18 degrees from the vertical . Find the net force acting on the bucket (due to the forces and the weight) in Newton's
Physics Force & Laws Of Motion Level: High School
A child is pulling a box of mass 3.7 kg , along a smooth horizontal surface using a rope tide to it . The rope bears an angle 14.62 degrees above the horizontal . If the velocity of the box is 14.93 m/s and its acceleration is 0.2 m/s2 find the force between the box and the floor ( g = 9.81 m/s2
Physics Force & Laws Of Motion Level: High School
A child pulls a friend in a little red wagon with constant speed . If the child pulls with a force of 16 N for 14.3 m , and the handle of the wagon is inclined at an angle of 29 degree above the horizontal , how much work does the child do on the wagon ?
Physics Force & Laws Of Motion Level: High School
A child pulls a friend in a little red wagon with constant speed . If the child pulls with a force of 16 N for 14.3 m , and the handle of the wagon is inclined at an angle of 29 degree above the horizontal , how much work does the child do on the wagon ?
Physics Force & Laws Of Motion Level: High School
After a tornado , a 0.60 g straw was found embedded 2.9 cm into the trunk of a tree . If the average force exerted on the straw by the tree was 60 N , What was the speed of the straw when it hit the tree ?
Physics Force & Laws Of Motion Level: High School
After a tornado , a 0.60 g straw was found embedded 2.9 cm into the trunk of a tree . If the average force exerted on the straw by the tree was 60 N , What was the speed of the straw when it hit the tree ?