Answer:
About 34.18kg
Explanation:
Using F=ma, you know that the force that an object exerts can be found by multiplying the mass and the acceleration. Therefore, you can find the mass with the formula [tex]m=\dfrac{F}{a}[/tex]. Plugging in the values you were given, [tex]m=\dfrac{335}{9.80}\approx 34.18kg[/tex]. Hope this helps!
