If a spacecraft that seems to be motionless in deep space is given some type of quick push, what will happen? …
The spacecraft will not move due to air resistance. The spacecraft will move and will not stop until it is stopped by an equal and opposite force.
What is the difference between speed and velocity?
The reason is simple. Speed is the time rate at which an object is moving along a path, while velocity is
the rate and direction of an object’s movement
. Put another way, speed is a scalar value, while velocity is a vector.
Can acceleration mean slowing down?
When you think of something accelerating, you probably think of it as speeding up. But an object that is slowing down is also accelerating. Remember that acceleration is a change in speed. A car that is slowing down is
decreasing its speed
.
What is the astronaut’s velocity after pushing the object?
=
– 0.25 m/s
.
What do objects in space that are moving at a constant velocity?
Motion with Constant Velocity: When an object is moving with constant velocity,
it does not change direction nor speed
and therefore is represented as a straight line when graphed as distance over time. … This tells us in which direction the object moves.
What are the similarities and differences between speed and velocity?
Speed and velocity both represent a way to measure the change in position of an object relative to time. In fact, for
a straight line motion
, the speed and velocity of an object are the same (since distance and displacement will be the same). Speed and velocity are measured in the same units: meters per second or m/s.
What are 5 differences between speed and velocity?
| Speed Velocity | Speed is a scalar quantity Velocity is a vector quantity. | Speed ascertains how fast a body moves. Velocity ascertains the object’s speed and the direction it takes while moving. |
|---|
Why is the acceleration positive even though the cart is slowing down?
When the fan is pointed in the direction of the shove, the force is positive and the cart slows down. The acceleration is positive
because the negative velocity decreases
. … when the velocity is momentarily zero while the cart is changing from moving in the negative direction to the positive direction.
Is acceleration always negative when slowing down?
In Example C, the object is moving in the positive direction (i.e., has a positive velocity) and is slowing down. According to our principle, when an object is slowing down,
the acceleration is in the opposite direction as the velocity
. Thus, this object has a negative acceleration.
Can you have a positive acceleration and decreasing speed?
Yes
, an object can have positive acceleration and decreasing speed . while executing SHM , when an object moves from mean to extreme position, its velocity goes on decreasing while acceleration increases.
What happens if two objects collide in space?
Instead of exploding like massive bombs, space collisions act like smooth, undefined balls of gas. Once two stellar bodies meet,
the massive gravity of each one will distort the shape of the other
, usually resulting in a droplet shape.
What happens if an astronaut throws a ball in space?
If one throws it in the direction of motion,
it will speed up and go further out, causing the orbital period to lengthen
. It would be at the same spot later then the station. Throwing the opposite direction will cause it to slow down, lowering it’s orbital period, and the ball will arrive first at the spot.
Can you push a heavy object in space?
TL;DR: While
weight is absent in space
, mass does not change, and it’s mass, not weight, that makes something heavy hard to move. Something that’s hard to get moving on Earth is equally hard to get moving in space, and likewise with slowing something down.
What happens if you throw a hammer in space?
“If I drop a hammer on a space walk,
ninety minutes later that hammer may collide with me or the space station, causing some damage
,” Wray says, referencing the time it takes the space lab to orbit the earth at more than 17,500 miles per hour.
What happens if you keep accelerating in space?
If a space ship is using constant acceleration over interstellar distances,
it will approach the speed of light for the middle part of its journey when viewed from the planetary frame of reference
. This means that the effects of relativity will become important.
What keeps the object remain at rest?
Inertia
is a force which keeps stationary objects at rest and moving objects in motion at constant velocity. Inertia is a force which brings all objects to a rest position. … A more massive object has more inertia than a less massive object.
