Flashcards
flashcards 7.1
Flashcards do conjunto (20)
- 1what is force measured in?newtons.
- 2what is it called when something slowdowns or stops?deceleration.
- 3how can a spring measure a force.because it returns to its normal shape after being stretched or squashed.
- 4what is inertia?when an object doesn't move until someone makes it move.
- 5what happens when force are balanced?you would stay still or move at a constant speed.
- 6what happens when a force is unbalanced?you can speed up.
- 7what is acceleration?speeding up.
- 8what does gravity do?it pulls you towards the center of the earth.
- 9what is footwear designed to do?reduce impact of collision between your foot and the ground.
- 10how can a force interact with two substances?either a push or a pull.
- 11when surfing what happens when all forces are unbalanced.you could sink.
- 12how can you show forces in a diagram?with arrows.
- 13how can force change motion?start moving. speed up. slow down. some to a stop. change direction.
- 14what changes an objects direction?a twist.
- 15what is a balanced force?all forces are even.
- 16what happens if a rollercoaster is bought to a sudden stop?you go backwards.
- 17what force do you use when throwing a tennis ball?push.
- 18what force do you use to open a doorknob?twist it.
- 19when forces are balanced what do they add up to?they add up to 0.
- 20what force do you use to drag something?pulling.