If an object changes speed or , its velocity also changes. Any change in results in acceleration.
2 answers:
Answer:
Velocity is the vector quantity in which we need magnitude as well as the direction both.
Here we know that when we say the velocity then it means we are considering the magnitude of speed as well as direction both
Now if we say that speed is changed then in that case the velocity will also change as the magnitude of velocity is always known as speed.
So here it is correct to say that if velocity will change then it will be due to change in speed or direction of speed.
But here in both the cases we can say that acceleration may or may not be same.
because acceleration is defined as the rate of change in velocity always
so we will say
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The correct option is (D) Gamma ( 
)
Explanation:
Now this question is a tricky one because all of these options are somehow involved in radioactive decay; however, in this case the SYMBOL is required NOT the elements. There are three symbols involved in radioactive decay, which are:
1. α for alpha decay
2. β for beta decay
3. γ for gamma decay
In the options only one symbol is present which is gamma. Hence option (D) Gamma ( ) is the correct answer.
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Explanation:
Now this question is a tricky one because all of these options are somehow involved in radioactive decay; however, in this case the SYMBOL is required NOT the elements. There are three symbols involved in radioactive decay, which are:
1. α for alpha decay
2. β for beta decay
3. γ for gamma decay
In the options only one symbol is present which is gamma. Hence option (D) Gamma (
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105 kg m/s
Explanation:
The change in momentum of the car is equal to the impulse, which is equal to the product between the force applied and the time of the collision:
in this case, the force applied is F=60.0 N, while the time of the collision is , so the change in momentum of the car is