A:B: One of the forces is stronger than the other Both forces are equal C:D: Unbalanced forces cancel each other out, so there is no change Force #7 Forces occur in pairs and each pair of forces can be either balanced or unbalanced. How can an unbalanced force change the speed or direction of an object in motion?
A. One of the forces is stronger than the other
A:B: NewtonsMeters #8 Which unit measures the Unit of Force? C:D: Secondsm/s 2
A:B: Law 1 – Law of InertiaLaw 2 – Law of Acceleration C:D: Law 3 – Law of Action and Reaction Law 4 – Law of Conservation #9 An object a rest remains at rest and an object in motion remains in motion at a constant speed unless acted upon by a unbalanced force. Ex: Seat belt Ex: pulling the table cloth out from under dishes
A:B: Law 1 – Law of InertiaLaw 2 – Law of Acceleration C:D: Law 3 – Law of Action and Reaction Law 4 – Law of Conservation #10 An object acted on by an unbalanced force will accelerate in the direction of the force. *(More force is required to move more mass.) Ex: It takes more force to move a car than a bicycle
A:B: There is no force or gravity There is no friction or gravity C:D: There is no friction or newton There is no weight or mass #16 Why can a spacecraft travel in space at a constant speed and in a straight path?
A:B: Light energy to chemical energy to electrical energy Sound energy to light energy to chemical energy C:D: Chemical energy to electrical energy to light energy None of these #20 *Energy transfer from one form to another. List, in order, three of the energy conversions that are present in this picture.
C. Chemical energy to electrical energy to light energy
A:B: No energy is disappears. Energy is just changed to another form Not all energy must be converted C:D: Both of these None of these #21 The Law of conservation of change states that matter cannot be created or destroyed. How does the Law of Conservation of Change apply to a flashlight?
A. No energy is disappears. Energy is just changed to another form
A:B: Motion energyStored energy #22 What is potential energy? C:D: Electrical energyNone of these